1959 Encyclopaedia Britannica and Year Books?

I have recently inherited a full set (24 volumes) of 1959 encyclopaedia Britannica from 1959. It is in fair condition, the spines are all intact and all of the pages are intact, covers are in perfect condition. I am looking for a value to these books. I wish to sell them. I am also in possession of a complete set of the Britannica Book of the Year series from 1960 to 2006 all in mint condition some still in plastic wrapping and I need a value for those as well.

By Jennifer L