1931. Harvard Map Collection, Harvard College Library. This layer is a georeferenced raster image of the historic paper map entitled: Map of greater New Orleans, Louisiana. It was published by the New O... Harvard Map Collection, Harvard College Library.
1931. Monterey County (Calif.). This point shapefile contains information about earthquakes in Monterey County, California, occuring from 1931 to 2001. This layer is part of a col... Monterey County (Calif.).
1931. Rosenberg, Lewis I. This point shapefile contains records of historical seismicity (1931-2001) recorded by the Northern California Earthquake Data Center. These data s... Monterey County (Calif.). Planning Department.
1931. Hopkins Marine Station. This polygon shapefile contains the original boundary of the Hopkins Marine Life Refuge (HMLR) as defined in Pacific Grove city ordinance No. 284 i... Stanford Digital Repository.