From Miller and others (1998): "Mount Martin, venting a prominent steam plume, was first photographed in 1913 but erroneously called Mt. Katmai (Griggs, 1922). In 1915, Griggs (1922) recognized that the mountain was an unknown, fumarolically active volcano west of Mount Mageik and named it in honor of George C. Martin, who was the first to visit and describe the Katmai area following the 1912 eruption.
"Numerous reports of activity from Mount Martin are contained in the literature. Sapper (1927) reported strong 'smoke' clouds from Mount Martin during the period 1913-1919; Griggs (1922) who explored the area during that time, mentioned only steam." The persistent and conspicuous steam plume present at Mt. Martin does not constitute a volcanic eruption.

From Hubbard (1931): "The day [in 1922] was unusually clear, and Martin, Mageik, and Kukak volcanoes were sending graceful columns of smoke high in the air, the ship's sextant giving the height of Martin's plume as close to 20,000 feet." This activity does not constitute a volcanic eruption.

From Jaggar (1927): "Mageik and Martin were two volcanoes seen by Dr. Jaggar to be steaming, looking northwest from Shelikof Strait on May 18, 1927." This steaming does not constitute a volcanic eruption.

Jaggar (1929) reported that Martin and Mageik volcanoes were steaming throughout 1929. This activity does not constitute a volcanic eruption.

From Muller and others (1954): "In recent years Mount Martin, a 6050-foot peak 11 miles southwest of Mount Trident, has been one of the steadiest performers in this part of the Aleutian Range. Because of Mount Martin's location, some of its activity has been incorrectly attributed to its larger neighbor to the northeast, Mount Mageik. Probably both the ashfall at Kukak Bay on July 22, 1951, and the eruptions reported as occurring simultaneously with Mount Trident's activity in February 1953, came from Mount Martin."
Miller and others (1998), however, doubt the validity of this eruption, stating that "all reports of eruption or ash emission are probably spurious, reflecting only the persistent and conspicuous steam plume. Steam emission is normally vigorous and continuous from the summit vent of Mount Martin with plumes occasionally rising 600 m above the vent and extending downwind for 20 km."

Muller and others (1954) state that they believe the "eruptions reported as occurring simultaneously with Mount Trident's activity in February 1953" came from Mt. Martin, and also note that "During the second week of July [1953] Mount Martin was observed to be steaming steadily and with moderate vigor, although its plume was less conspicuous than that of Trident. During this interval, only quiet steaming occurred at the crater near the crest of Mount Mageik."
However, Miller and others (1998) discount this eruption report, saying "all reports of eruption or ash emission are probably spurious, reflecting only the persistent and conspicuous steam plume. Steam emission is normally vigorous and continuous from the summit vent of Mount Martin with plumes occasionally rising 600 m above the vent and extending downwind for 20 km."

Ward and Matumoto (1967) note that "During August 3-5, 1965, pulverized ash filled the air in the region from the Valley of Ten Thousand Smokes to Brooks Lake. Although several people were within ten miles of Mts. Trident and Martin, the suspected sources, no aerial or ground reconnaissance could establish whether this ash was of volcanic origin or simply windblown (Ward and Ward, 1966.)" Ward also notes that Mt. Martin "fumed steadily" during 1965.
However, Miller and others (1998) don't believe that this is an eruption account, saying "all reports of eruption or ash emission are probably spurious, reflecting only the persistent and conspicuous steam plume. Steam emission is normally vigorous and continuous from the summit vent of Mount Martin with plumes occasionally rising 600 m above the vent and extending downwind for 20 km." Additionally, the 1965 event could simply be 1912 Novarupta ash remobilized by strong winds.

The Bulletin of Volcanic Eruptions (1980) noted that during 1978: "This volcano continues to actively steam from its summit crater, and is the most conspicuous steamer in the Katmai region. The steam appears to rise from numerous fumaroles circling the crater rim." This activity does not constitute a volcanic eruption.

From Neal and others (1995): "The Weather Forecast unit at Elmendorf Air Force Base reported a plume-like cloud originating from the general region of the Katmai group and moving toward Kodiak Island on December 5 [1994]. A satellite image indicated a possible hot spot at the source of the plume which appeared to be near the Mageik-Martin-Trident volcano cluster. AVO and NWS checks of concurrent satellite imagery showed nothing unusual and it was concluded that this was a meterological phenomenon."

From McGimsey and Neal (1996): "On Wednesday, March 15, 1995, the National Weather Service (NWS) received a report that residents in King Salmon, located 92 km (57 mi) to the northwest observed steam plumes rising 600-900 m (2000-3000 ft) over the general vicinity of Mount Martin. No indication of eruptive activity was detected on satellite imagery."

From McGimsey and Wallace (1999): "On Thursday, February 19, 1997, AVO received multiple pilot reports (PIREPs) of ash and steam rising to 5,000 ft (~1,500 m) above either Martin or Mageik volcanoes. No anomalous seismic activity was recorded on the Katmai seismic network, and no indication of eruptive activity was detected on satellite imagery."
"* * * Another observation of unusual steaming at Martin and Mageik was reported to AVO on December 11, 1997, via the Alaska Tsunami Warning Center, who received the report from a resident of Karluk Village on Kodiak Island. Using a spotting scope, the village resident had observed the peaks for the previous three weeks - noting no unusual activity - when on the morning of the 11th he witnessed a sudden increase in steam activity and watched as white, towering steam clouds billowed from Martin, subsided, and then rose again to about 600-700 ft (~200 m) above the vent, forming a large mushroomed top before dissipating. A second white, billowing steam plume then rose from adjacent Mageik. Local pilots also noticed the unusually vigorous activity."
Miller and others (1998) state that these events do not constitute a volcanic eruption.

From Neal and others (2005): "On December 11, 2002, the National Weather Service office in King Salmon reported a 'large steam plume' emanating from mountains east of King Salmon and extending up into the cloud deck. No discoloration was noted in the cloud. AVO staff examined the real-time seismic data from the Katmai area network and saw no evidence of anomalous behavior. No cloud or thermal anomaly was detected in Advanced Very High Resolution Radiometer (AVHRR) images. This information was relayed back to NWS in King Salmon.
"About 45 minutes later, the NWS at the Anchorage Air Route Traffic Control Center issued an urgent pirep (UUA) based on a pilot report of a 'strange plume' from Martin or Mageik that extended into cloud deck at about 7,000-10,000 ft. AVO concluded that this was the same observation reported earlier from King Salmon and took no further action."

From Neal and others (2005; Open File 2005-1308): "On February 17, AVO received a call from the Bristol Bay Fire Chief Alan Williams who reported a 'steam column, all white, rising vertically above mountains to the east (of Naknek, 25 km [16 mi] west of King Salmon) * * * bigger than normal, and dissipating with altitude.' Williams had been a resident of the area for some years and felt this was a much larger a steam plume than was typical for the Katmai group. Williams' photos [see fig. 12 in original text] show the plume rising from Mount Martin, one of the Katmai Group of volcanoes with a very active and robust fumarolic area near its summit. AVO checked the seismic records for the Katmai area and noted no unusual signals for several hours before or after the time of this sighting.
"On October 7, AVO received a pilot report from NWS describing 'a volcano spewing steam and ash' approximately in the location of Martin or Mageik; seismicity was normal and this information was relayed back to NWS who took no further action."

From McGimsey and others (2007): "On February 26 [2005], AVO received from the Center Weather Service Unit (CWSU) several pilot reports of a steam cloud rising to 12,000 ft (3,360 m) from Katmai. An inspection of the webicorders, spectrograms, and satellite logs revealed nothing unusual. Because Katmai Volcano does not have active fumaroles, the reported activity was attributed to nearby Mounts Mageik or Martin, both of which have active fumaroles that frequently produce noticeable steam plumes. Nonvolcanic meterological phenomena that commonly are mistaken for volcanic activity also are common in this area."

From Neal and others (2009): "On January 10, 2006, AVO raised the Level of Concern from GREEN to YELLOW after a sharp increase in earthquake activity beneath Mount Martin that had begun on January 8 (Dixon and others, 2007). Roughly 300 earthquakes were located in just over 2 days [see fig. 38 in original text], a significant increase over the long-term average rate of less than one event per day since the seismic network was installed in 1996. Satellite data did not indicate any obvious changes at the surface.
"Elevated seismicity continued for about 2 weeks after which the rate of shallow volcano-tectonic earthquakes decreased to levels considered background for Mount Martin. On January 27, AVO downgraded the Level of Concern to GREEN. Throughout this seismic swarm, no surface manifestations of the increase in seismicity were noted in satellite imagery or by passing pilots. The cause of this swarm remains uncertain (John Power, USGS, oral commun., 2007)."

From Herrick and others (2014): "During 2012, in addition to reports of strong fumarolic activity, the AVO seismic network recorded bursts of elevated seismicity, similar to episodes seen in recent years (Dixon and Power, 2009; O'Brien and others, 2012). The Aviation Color Code and Volcano Alert Level at Martin remained GREEN/NORMAL.
"In mid-April, AVO received three emails regarding activity at Martin. Observers in the area of Lower Ugashik Lake about 120 km (75 mi) to the southwest noted a plume that was larger than any that had been seen in more than 50 years in the area. Another observation from an overflight reported a strong sulfur odor; this observer shared photographs of the cone and the summit crater with AVO. Comparisons with other recent photographs of Martin suggested no significant change in activity. Previous overflights of Martin routinely noted sulfur smell and gas measurement flights typically measure both SO2 and H2S (Doukas and McGee, 2007).
"On June 27, climbers ascended the volcano and reported a strong sulfur odor upon reaching the crater rim. Gas concentration was strong enough to cause coughing and a burning-throat sensation. They described roaring and bubbling noises coming from the crater lake and three fumaroles located on the triangular peak 'below the summit cone on the northeastern side of Mount Martin.' Additionally, 'snow on the entire final summit cone was tinged yellow from sulfur. . . .' These attributes previously have been noted at Martin during many AVO field visits to the volcano and are considered typical."

From Orr and others, 2023: "Although no historical eruptions of Mount Martin are known, its fumarolic field frequently produces towering vapor plumes that can reach as high as 1,000 m above the summit when environmental conditions are right. Such a plume was observed on March 14, as described in two PIREPs released by the Federal Aviation Administration (FAA). The reports, which described steaming to 10,000 ft (3,000 m) from 'a mountain,' were linked to Mount Martin and quickly verified as typical activity for this volcano.
"Mount Martin showed an increase in seismicity during 2019, although the cause was undetermined. Earthquakes at the volcano are common - AVO typically locates as many as one dozen weekly - but approximately 400 located earthquakes took place in September 2019, a swarm that was the largest at Mount Martin since 2006 (O’Brien and others, 2012). The activity declined to about 100 earthquakes per month in October and November, then returned to background levels in December. Background-level earthquakes at Mount Martin typically cluster at a shallow depth in a diffuse pattern north of the summit. In contrast, the 2019 swarm was located predominantly in the west half of this background cluster zone and at a slightly greater depth. AVO closely monitored Mount Martin’s temporary increase in seismicity but kept the Aviation Color Code and Volcano Alert Level at GREEN and NORMAL throughout the year."