Monroe Hobby were listed in 'Your Guide to Model Railroads', Copyright 1957, Bronco-Modelcraft, Inc. The listing mentions diaphragms for H0, S and 0 scale passenger cars. Diaphragms for 0 scale were available by 1952, and continued until at least 1959.
Monroe Hobby Products MHP pair 0 scale passenger car diaphragms, each 1 1/4 by 5/8 inch |
page views since 1998