Call a local quilt guild , and see if they want them. My sister has a shop , and sometimes people bring back old magazines ,so she has a "free" pile . I noticed some of the LQS will have a "free" pile of magazines but they put them in the classroom, so those attending classes get to pick.
GoodWill is always a choice. Maybe if any church has a quilting group they might like them.
You could offer them here in ( in bundles) the donation section, with the recipient paying postage.