-------- Original Message -------- Subject: RE: Keeping old topographic indexes Date: Wed, 15 Jun 2011 10:23:03 -0700 From: Diaz, Carlos <[log in to unmask]> To: <[log in to unmask]> Actually a quadrangle name can change over time. Olympia had its own quadrangle name until the USGS switched it to Tumwater. I don't know exactly when this happened but name change over time does ocuur. Carlos A. Diaz Daniel J. Evans Library The Evergreen State College Olympia, Washington [log in to unmask] -----Original Message----- From: Maps, Air Photo, GIS Forum - Map Librarianship [mailto:[log in to unmask]] On Behalf Of Angie Cope, American Geographical Society Library, UW Milwaukee Sent: Tuesday, June 14, 2011 6:27 AM To: [log in to unmask] Subject: Keeping old topographic indexes -------- Original Message -------- Subject: Keeping old topographic indexes Date: Thu, 9 Jun 2011 09:40:28 -0500 From: Schiefer, Sandra Lynn <[log in to unmask]> To: [log in to unmask] <[log in to unmask]> We have some topographic *index* maps from the 1960-1980s. Do these change over time, or are the same from year to year? I would assume that once a quadrangle is named, it does not change. Is there any need to keep these? *Sandy Schiefer* Government Documents Librarian 106B Ellis Library University of Missouri - Columbia Columbia, MO 65201-5149 573-884-8123 [log in to unmask] MU Libraries...Your Connection to Knowledge http://mulibraries.missouri.edu/