Lake Champlain 1950/1951 (ver. 1)
PDF (17.4 MB)
USGS - Historic Quads
Lake Champlain 1950 Shaded Relief
PDF (21.6 MB)
USGS - Historic Quads
PDF (18.4 MB)
USGS - Historic Quads
PDF (17.2 MB)
USGS - Historic Quads
Lake Champlain 1962/1975 (ver. 1)
PDF (20.6 MB)
USGS - Historic Quads
Lake Champlain 1962/1975 (ver. 2)
PDF (19.5 MB)
USGS - Historic Quads
Lake Champlain 1962/1975 (ver. 3)
PDF (19.7 MB)
USGS - Historic Quads