parts 1 thru 23 of the  1892 RAND MCNALLY & CO ENCYLOPEDIA AND GAZETTEER with colored maps and illustrations.  Every section I looked to had 4 pages of color full page atlas maps in the back.  I have shown a few examples.       I am not sure if this is a complete set but it is complete from sections 1 thru 23.   Nice shape.   Edges of pages have some minor fraying.