I found this faint stamp on a walk leading from the back door of a house facing Allen, on the southwest corner of Allen and Elizabeth Streets. The walk extends diagonally northwest toward Elizabeth.

I can’t make out the name exactly although I think it is [initial] [initial] Buonodono, maybe R.D. I haven’t been able to figure anything out about the contractor. It is undated, but the house was built in 1923 so perhaps it dates to then.