I don't know of any online Directories for Queens County. Did you view family on Ancestry in 1880 or 1900 or 1892 census? It should show a house number and may have street. Queensborough Library will do a Directories look up for a small fee. If you find he exact business address, which may be the same as his home, let me know.

What is his DOB, and place of birth? Wife's name?

Click on my name & you can email me privately.