Brick wall and parapet fell from new Community High School in Manhattan, Montana.

1925 Clarkston Valley, Montana earthquake; magnitude 6 3/4.

One of several large rockfalls near Lombard, Montana that nearly missed trains, blocked rail transportation, and cost railroads an estimated one million dollars to repair.

1925 Clarkston Valley, Montana earthquake; magnitude 6 3/4.

Methodist Church in Three Forks, Montana. The tall twelve-inch-thick brick wall was not tied in at the second story and the mortar failed. (BSSA, 1926)

1925 Clarkston Valley, Montana earthquake; magnitude 6 3/4.

School in Three Forks, Montana. According to an article by Fred F. Willson published in the Bulletin of the Seismological Society in Sept. 1926, p. 168, "...this building was the usual type, with concrete foundation, brick walls laid in lime mortar, and with wooden floor joists and wooden rafters. The walls bulged to a certain extent on all four sides, plaster was badly cracked throughout, and the foundation and basement were also damaged."

1925 Clarkston Valley, Montana earthquake; magnitude 6 3/4.

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