If public libraries in my area are representative, you shouldn’t have trouble finding a a copy of By Love Possessed. Within the Four County Library System in New York, there are copies available from
- George F. Johnson Memorial Library,
- Moore Memorial in Greene,
- Sidney Memorial Public Library
- New Berlin Library
- Cannon Free library
- Louise Adelia Read Memorial Library
- Stamford Village Library
If you live in the wider world, I suggest you search for By Love Possessed on WorldCat(R) . WorldCat is a library of libraries, including many college and specialized libraries. When I want something that doesn’t show up in my public library system data base, I use WorldCat. One cool feature is that I can enter my zip code and find the nearest site that has the book I’m seeking.