wow...
In that same AA article, up above that entry, it is stated that Indestro announced the construction of the factory on Kildare Avenue in 1923:
"Fig. 7 shows a notice regarding a new building for Duro Metal Products, as published on page 883 of the December 7, 1923 issue of Sheet Metal Worker. The text states that Duro Metal Products had awarded a contract for a new building, to be constructed at 2649 North Kildare Avenue in Chicago."
So if these catalog pages are from 1929, then we have to believe that Indestro built a factory on Kildare Avenue in 1923, then moved to West 37th Street in 1929, but continued operations on Kildare Avenue all the way through to 1990.
Am I getting that right?
Because when I was writing purchase orders and addressing the envelopes, it was the Kildare Avenue address I was using in the 1970s and 1980s.