No. 7507 Advertisement in Dorchester and Quincy Directory 1868-9, from J. Sanborn.
Robinson’s Block is the building at the intersection of Dorchester Avenue and Adams Street in the north point of that intersection. The 1870 Boston Directory has an entry for Jeremiah Sanborn, apothecary, Adams cor. Dorchester avenue, h. Hancock near Columbia, Wd. 16 [Dorchester].