What is the best way to sell vintage hockey cards?

I have inherited some Topps 1950’s hockey cards (about 80) repetitions etc. but there is at least one rookie card.

Have heard about Becker’s book to obtain prices but not sure if I should go to a local dealer here in this Canadian city. If I am offered a lot price, what should the criteria be for obtaining a good market value?

If you suggest that internet is the best way to sell, I would need some information on how to do this securely.