lot of four matching early 20th century antique american salvaged chicago interior public school classroom pendant lights with white opalescent shades

group of four matching all original and intact early 20th century antique american interior chicago public school single bulb pendant lights likely fabricated by the r. williamson company, chicago, ills. the fixtures feature "schoolhouse" style opalescent white glass shades or globes with original brass shade fitters, chains and canopies. a total of 20-25 matching fixtures were salvaged from the classrooms of an old chicago public school building built around 1919. priced for the lot of four. 

Each measures 12" diameter and varies in length