Value of The Catholic Encyclopedia?

I have books 1-10, 12, 13 and 15 of the Catholic Encyclopedia published between 1907 and 1912 by The Encyclopedia Press, copyright 1913. The books have been stored in my attic for a number of years and some pages have been a little nibbled by mice! All the covers are in a reasonable condition if a bit worn. Any clues as to value or where to sell these would be fantastic. Thanks!