Close-up of the block we live in. Our house was then (1911) owned by B. M. Cleveland.
In City Directories for 1910, 1904, 1901 and 1899, there is a Mrs Betsey M. Cleveland, widow of Stephen, living at 56 Nonotuck Street. Thus we know that our house existed in 1899.
I note two errors on this map: Madison Avenue jogs at Jefferson, rather than Nonotuck, and house #53 is missing on the left side of Nonotuck (or perhaps it was re-numbered later, as today's houses are numbered 45, 47, 51, 53, etc. skipping 49).