Old record collections and their values

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I have an old record collection with ablums such as "Al Jolson in songs he made famous" by Decca Records in 1946, and "Frederic Chopin His Story And His Music" produced by Vox Records. It is Music Masters Series NO.5 and more. I don't even know were to start to find out a little about these albums and what their value might be. Can anyone help me? Thanks!