1960's Stools and Chairs Cassie Wood December 01, 2022 18:40 Updated Related articles Multiple Model Chair/Stepstool Advertisements, 1950s Models 740 to 749: The Cosco Step Stool and Chair, 1940 Model 4-D: Cosco Two-in-One Step Stool, 1948 Models 140 to 149: The Cosco Set-Up Stool, 1940 Replacement Treads for the 11120 Retro Step Stool