Your search for ""USGSSW38-108.875"" revealed the following:

~ Hamm Canyon CO topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 2013
Sale price
$1895
$18.95

~ Hamm Canyon CO topo map, 1:24000 scale, 7.5 X 7.5 Minute, Historical, 1950
Sale price
$1495
$14.95