Colorado

Post cards followed by [S#] are published by Sanborn Souvenir Co.  They produced thousands of post cards for Colorado and Wyoming with unique numbers.  The lowest numbers are linen, the high numbers chrome, and there is a special series identified by a letter and four numbers that are real photo cards.  If you purchase a Colorado lot we will, at your request, include a listing of the Sanborn card titles that we know of for the state.