While on a double date with my parents the other night (seeing Avenue Q with your father is just a little weird), my father mentioned that my Zedda (grandfather) used to work in 305 Seventh Avenue.Zedda was a furrier back in the days when wearing fur wasn't evil. My dad describes him as a very powerful man who could lift a stack of pelts as easily as you might lift a telephone book.
That's not how I remember my Zedda -- by the time I was on the scene, Zedda owned a stationary store in Queens. We'd go by every so often to visit. I remember the greeting cards and the assortment of general stuff in the store. There was candy, too, but I only really discovered that as a teen when, popping in on my own, Zedda stocked me with some goodies for a youth group trip.
I tried to see what history this building holds but was unable to find much. It is not considered to be architecturally interesting enough for my favorite NYC architecture website and a basic google only gets me some of the businesses in the building. Sorry! It is, however, a piece of family history and I will never walk by it again without thinking about my Zedda.