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Your search for ""USGSSW40.5-78.5"" revealed the following:

Altoona Pennsylvania Historical topographic map, 1:62500 scale, 15 X 15 Minute, Year 1922

~ Altoona PA topo map, 1:62500 scale, 15 X 15 Minute, Historical, 1922
Altoona Pennsylvania Historical topographic map, 1:62500 scale, 15 X 15 Minute, Year 1920

~ Altoona PA topo map, 1:62500 scale, 15 X 15 Minute, Historical, 1920, updated 1954
Altoona Pennsylvania Historical topographic map, 1:62500 scale, 15 X 15 Minute, Year 1920

~ Altoona PA topo map, 1:62500 scale, 15 X 15 Minute, Historical, 1920, updated 1976
Altoona Pennsylvania Historical topographic map, 1:62500 scale, 15 X 15 Minute, Year 1920

~ Altoona PA topo map, 1:62500 scale, 15 X 15 Minute, Historical, 1920, updated 1954