american memory confusion

Am I missing something, or did some of the search functionality vanish from the redesigned American Memory site? I thought there used to be a way to search by limiting your search by medium. So if you only wanted to search and retrieve photos or audio files you could do that. Now that option seems to hidden, under the option to browse specific collections. If I browse Books and other printed works, I’m then given the option to run a search limited to those formats. I was really confused, probably just because I expect very different things from the labels “browse” and “search”. Hopefully a normal, non-librarian person will find the site easier to use, even if I am perplexed.