If you got them at the site I'm thinking about -- Adobe Studio Exchange -- there never is a read-me. Any & all notes by the creator are usually on the page describing the item. Read carefully before hitting the download button; I found some nice patterns there to make textures with but was leery of taking them until I saw they were made from photographs the contributer took herself while on vacation & at the zoo. Also check for FAQs & Terms on the site itself, sometimes the info/usage restrictions gets tucked away there.