CONTENTS 



Page 



SECTION I. PURPOSE OF DATA BANK 1 



SECTION II. DATA STORED IN THE BANK 3 



SECTION III. FORMAT OF DATA STORED IN THE BANK 3 



SECTION IV. USE OF BANK 3 



SECTION V. FUTURE CONSIDERATIONS 3 



APPENDIX - A LIST OF SOURCES FOR DATA BANK 12 



APPENDIX - B CODED INFORMATION OF APERTURE CARD 15 



APPENDIX - C STATE ABBREVIATION CODES 17 



APPENDIX - D LISTING OF COMPLETED APERTURE CARDS 20 



TABLE 



U.S. Army Corps of Engineers Division or District Listing. . . 1 



FIGURES 



1. Corps of Engineers Division and District boundaries and 

 headquarters 2 



2. Aperture card keypunched with coded data .... 4 



3. Index map of I : 250,000-scale topographic map coverage of the 

 United States, excluding Alaska 5 



4. Index map of 1:250, 000-scale topographic map coverage of 

 Alaska 6 



5. Enlargement of aperture card film image showing photo coverage 

 of the Washington-Oregon coast, held by the State of Washington 

 Department of Natural Resources 7 



6. Enlargement of aperture card film image. Photo coverage of the 

 Oregon coast, taken by U.S. Air Force. Film held by U.S. 

 Geological Survey 8 



