​​​​​We are offering a COLOR COPY of 1921 antique advertisement map of part of Blue Island - Robertson's Ridge SUB.                                                                                                                                                             It is a beautiful 2-sided plat map, made into a booklet, for advertisement of properties for sale. It shows 2 Blocks of Lots for sale, bounded by: 120th Place + Suburban Line of Electric Cars of the Rock Island Railroad + 121st Street + Western Avenue.
The name of the Builder/Real Estate Agent & their addresses listed on one side; and interesting information about the area with a coupon on the other side. 
As all other our maps & plats, this one has some surveyor's indexing markings & notes on both sides from various surveying projects, completed in the area.
The size is appr. 8.5" x 19.5". For proper dating of this map we referred to our extensive  archive. 
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#120thPlace + #SuburbanLinetrains #RockIslandRailroad + #121stStreet + #WesternAvenue