Placer Gold Deposits in Arizona by Maureen G. Johnson contains an inventory of gold placer mines, prospects and deposits located within Arizona. This Bulletin is out of production by the USGS but has been Modified and Reprinted by Iron Fire Publications with expanded information. Adds WGS  84 coordinates for placer locations.  WGS 84 is the default for GPS handheld units.  Coordinates can be used with Google Earth and National Geographic Arizona State Topo Maps or any other mapping program that accepts WGS 84 coordinates. It contains 243 (8 1/2" x 11") pages of information. There is absolutely no other book available that contains the wealth of detailed information on the subject of gold placer deposits in Arizona. ISBN: 1-892279-11-8.