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 1.5 software. These MrSid files were then uploaded into the CONTENTdm database at the Washington State University Libraries.
Add tags for A Map of Lewis and Clark's Track Across the Western Portion of North America, From the Mississippi to the Pacific Ocean, By Order of the Executive of the United States in 1804, 5 & 6. (1814)