Original maps were scanned in color at 600 dpi on a Microtek 9600XL scanner and saved as TIFF files. The TIFF files were converted into the MrSID format at a compression ratio of 12 to 1 using LizardTech's Geospatial Encoder 1.4 software. These MrSid files were then uploaded into the CONTENTdm database at the Washington State University Libraries.
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