According to the 1987 inventory list provided by Freddie Maguire, only the Anson by Falk was missing at the time.
The 1922 inventory just lists another Anson, without citing the photographer, which I suspect is the Stevens.
Here's a link to the 'Stevens' Anson image that is currently hosted in the NYPL digital library... Not sure if this is a scan of the original or a copy.
http://tinyurl.com/komys2
Btw, the 1987 list has some mistakes like the Jordan and Co. examples which in fact are still part of the collection.
I'll try to make a visit to the NYPL prints and photo dept. in mid September and cross check the original 1922 inventory and the 1987 one which they have by now.
If someone is planning a visit before then, ask the photo room staff (room 308) to provide you the updated inventory list. It's a blue bounded book.