I am trying to contact Scott Stamp & Coin Co. Inc. in New York re the Standard Postage Stamp Catalogue of 1929

Question

They publish the Scott Standard Postage Stamp Catalogues, and are located in New York.

Answer 1

They still publish that catalog every year. Most libraries have it in the reference area. Unlike 1929, it is now 5 volumes.
The scott catalog is now published by Amos Press. Here is a link to their web site:

http://www.scottonline.com/