Greyscale 8 bit/300 dpi, Color 24 bit/300 dpi Source https://usace.contentdm.oclc.org/digital/collection/p16021coll8/id/2359 Date digitized InfoField 2012...
Greyscale 8 bit/300 dpi, Color 24 bit/300 dpi Source https://usace.contentdm.oclc.org/digital/collection/p16021coll8/id/4152 Date digitized InfoField 2020...
Greyscale 8 bit/300 dpi, Color 24 bit/300 dpi Source https://usace.contentdm.oclc.org/digital/collection/p16021coll8/id/4157 Date digitized InfoField 2020...