YellowMaps El Cajon MTN CA topo map, 1:24000 Scale, 7.5 X 7.5 Minute, Historical, 1955, Updated 1984, 26.7 x 22 in - Paper

YellowMaps Guayama PR topo map, 1:20000 Scale, 7.5 X 7.5 Minute, Historical, 1960, Updated 1962, 32.17 x 29.36 in - Paper

YellowMaps Guayama PR topo map, 1:30000 Scale, 7.5 X 7.5 Minute, Historical, 1952, Updated 1953, 21.7 x 19.8 in - Tyvek