You may reproduce works in the public domain without restriction. Works created before 1923 or published without a copyright notice from 1923 - 1977 are in the public domain. See also Resources on the Web- Compliance Tools
You may photocopy up to:
a chapter from a book.
an essay, poem, or story from a collected work.
an article, essay, poem, or story from a periodical or newspaper.
a cartoon, chart, diagram, drawing, graph, or picture from a book, newspaper, or periodical.