so metropolitan museum of art has a register of books they’ve published that are out of print and that you can download for free! they’re mostly books on art, archeology, architecture, fashion and history and i just think that’s super useful and interesting so i wanted to share! you can find all of the books available here!
https://www.metmuseum.org/met-publications/all?searchtype=F&waysToRead=downloadPdf%2CreadOnline