Jackie, I would like to second some of the suggestions already made. I would first take the books to your local guild and give them first choice. We have had folks do this at my guild meetings a number of times. Not all books were taken but the pile was significantly decreased.

Donate to your local library. My library has a book sale 6 times a year and crafting books are always in demand. The library sells them from 25 cents to about $2.00 depending on hardcover, soft cover, age and condition. The "profits" go to support the library's efforts to purchase new materials for public use.

I understand how painful this process is, but in the long run, you will feel more free and will have in your hands only what you love and what you will use in the next stage of your quilting life. I had to do this when I moved from a house to a condo. Buy a box of good tissues and dig deep and keep only what is meaningful and useful to you. Best Wishes as you downsize.

Last year I went thru all of my quilting books and magazines, contacted a local quilt guild and asked if they were interested in them. One of the ladies was over to my house within a couple of hours and took all of them and was happy to get them.

Our local library has a sale every year and quilt books sell really well. I also like to donate to Salvation Army. They serve so many needy people and don’t spend mega bucks for CEO salary like Goodwill does. Local quilt groups also sell books at their shows and church sales usually have books for sale.

I have four piles of quilt books next the my chair. I can no longer read them.
They have been setting here for four days, I just don't want to give them away.
Selling something here is hard because the post is locked and you can't take off what is gone and add anything new.
Making 40 seperate threads would probably get me modded.

we are in the same boat. Fortunately I quit buying magazines in 1998 and shipped what I had to Austria believe it or not.

standard books and books on CD I do donate to the library for their sale. I don't worry about if they put them in the system or not, it all goes to the good of all.

I moved last year and did a lot of purging. I save Block magazines in the yearly folders but take the rest to the guilds free table after I read them. I don't want any more stacks of magazines to deal with.

We have a couple local thrift shops run by the disabled groups. I've donated sewing items such as books, patterns and fabrics to them. All goes quickly too.

They would be welcome at your Salvation Army or Rescue Mission thrift shop. Try donating them there.

You know you probably will never reread those magazines no matter that you think you will. :D

Besides donations.
If your daughter can help with managing/doing an etsy shop see www.etsy.com/market/used_quilt_books
and see www.etsy.com/market/used_crochet_books
Maybe sell the book together with some fabrics and/or some yarn as a packet might be more attractive for buyers.
Post your books titles in the for sale section on this forum, there might be some people here interested in buying a book. I hope your books find a good home.
Success with whatever you do.

A number of years ago I was diagnosed with vision issues and had to admit that my vision was going to run out before my fabric did...

I've given away a lot of stuff by looking for "wanted" ads on Craig's List. Also posted free ads. I've given non-quilting stuff to textile students. Craft stuff to an elementary school art teacher (budgets are slashed for such things). Girl scouts, church groups, an entire box of Christmas fabrics for the Forgotten Children's Fund to make stockings, 4-H and other fund raisers. You might check nursing homes/senior centers. It was/is easy to find people who wanted large pieces of fabric, until I came to this board I couldn't find people to take my scraps/little pieces -- but now I have a couple of people that I send boxes of odds and ends to. There are also groups that have book sales as fund raisers, they might be interested in the magazines.

I'd rather give things away than throw them away, easier on my spirit if harder on my body -- but it never hurts to put in an "best offer" line.