I do buy several of the recs in the SOTW AG. Mostly I pick picture books that I think will help the history reading come to life. For our literature, I don't try to keep on track with what we're learning in history. I purchase many titles that are on Sonlight's lists, as well as titles from other lists. My goal for read alouds and readers is to expose my dc to wonderful, well-written, engaging stories, not just to reenforce our history. I anticipate that as we move into US history/ more modern history, our literature list will include more books that fit into our history time period. For now, they are just really good books that are age appropriate for my dc!