Frog Pond (historical)
Lake in Alameda County, California · on the USGS Calaveras Reservoir quadrangle
37.49945, -121.77384
Maps that show Frog Pond (historical)
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Calaveras Reservoir, CA — USGS 7.5-minute topo (2021)
USGS Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1889)
USGS Historical Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1897)
USGS Historical Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1899)
USGS Historical Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1943)
USGS Historical Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1953)
USGS Historical Topo Maps (public domain) · California
Public domain
San Jose, CA — USGS historical 15-minute topo (1961)
USGS Historical Topo Maps (public domain) · California
Public domain
IFR Enroute Low Altitude Chart L-02 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-04 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
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Name, class, county and location: USGS Geographic Names Information System (public domain).