... copyright in the collection of Project Gutenberg-tm electronic works. Nearly all the individual works in the collection are in the public domain in the United States. If an individual work is in the ... the public domain in the United States and you are located in the United States, we do not claim a right to prevent you from copying, distributing, performing, displaying or creating derivative ... surveying, photographing, and plotting ancient remains. Plans for taking field-notes. Instruction in the proper methods of opening mounds, shell heaps, etc., and in excavating rock-shelters and...