RCA Victor Red Seal 78 Records

I have a question that I am sure someone in the Audiogon community can answer. My mother-in-law passed away. She had a few RCA red label 78 records in very good to excellent condition. I am wondering what I can do with them? Are they worth anything to anyone? For example, there is a 3-record set of Chopin Les Sulphides with the London Philharmonic. There is another set of records with Enrico Caruso singing O Sole Min and Rigoletto, an early Frank Sinatra singing Stormy Weather and Old Man River (this one is red label Columbia records), Ignace Jan Paderewki playing Chopin Polonaise in A Flat Minor, a Harmonia Records Corp recording of a Tango by Juan Vicari, a Columbia recording of Oklahoma by Andre Kostelanetz, a RCA recording of Jan Pierce, more Chopin with Jose Iturbi on piano, and Addinsell Warsaw Concerto with the LSO. They are very heavy and I am moving so selling them would be ideal. 

If anyone has any advice as to what or how or how much etc., I would love to hear. Thanks!!! Rinpoche