Works may be reproduced in the public domain without restriction. Works created before 1923 or published without a copyright notice from 1923 - 1977 are in the public domain. Works 1989 - present, may be under copyright whether or not a copyright symbol is present; no copyright symbol has been required since 1989.
Place the copyright symbol, name, and date on each copy of all duplicated images. Duplication from a collection of images is permissible as long as the number of images is so small that it will not diminish the intrinsic value of the original collection. It is also permissible if "thumbnail-sized" images are used as a reference or mnemonic tool.
Do not use images without compensation for any sizable archive that someone else has collected with considerable expenditure of time, energy, and money.
Do not acquire images that are free or inexpensive, and then charge an unreasonable amount for their use.
Clip art is sold to be copied. However, note any restrictions, especially concerning using images on the Internet.
Scanning Photos and Slides
Whenever possible, images must be purchased or licensed to be granted permission for use. If these options are not possible, then it is possible to digitize images in an educational setting if:
- only enrolled student in the class have access to the images.
- the image is used at a conference.
- used for a course assignment or other requirement for a degree. Such works can be kept for portfolio display.
You should purchase, license at a fair price, or point to an image if it should again become available in the future.