Speedy NYC Marriage Cert

With unprecedented speed, NYC has sent me my grandparents' marriage license from 1906. It's some help with genealogy but has less detail than I'd hoped.

I didn't know where Isaac Birk/Berk/Burk lived at that time, and now I do. Below is a photo--the tenement is still in existence, although the storefronts have obviously been updated (not necessarily "improved") since Grandpa's time.

Grandpa was 26 and Grandma Henrietta Mahler was 19 when they married, the first time for both. This license may be where some of the confusion about Grandpa's name came about. The official who wrote out the info calls Grandpa "Isaac Burk" but he signs himself "Isaak Berk." He gives his birth place as simply "Russia" and writes that his occupation is "carpenter." His father's name was Elias S. Burk (but the last name has been clearly corrected in some way). His mother's name was Necke Burk (again, both names heavily corrected, suggesting that they didn't translate well?). 2022 update: Necke Gelle Shuham Burk, possibly. 

PS Here's where my Grandma lived at the time, another address I never knew (here we are between the US Census years, so they may have moved every year for all I know). Another tenement still standing but with changed storefronts.