Free Vintage Clip Art for Homeschool Projects

I like to browse Google Books, so I've got a large collection of clip art from their public domain books; however, if you want a quick source of clip art(black and white only), check out Clip Art ETC. They have a large categorized, searchable free public domain clip art collection.

Most recently I've been using clip art for Kindergarten phonics. I've used them in the past for matching, alphabet and penmanship pages, note and report sheets, science sheets, coloring pages, and story starters. Among other things, these would be great for note-booking and time-lines. An efficient way to print out large numbers of images for projects is to choose the "Contact Sheet" option on your image editor. This will size all the images uniformly, all on one page, saving you paper and the hassle of printing out small images page by page.