http://www.ufoevidence.org/documents/doc1761.htm

http://www.scarecrowpress.com/Catalog/SingleBook.shtml?command=Search&db=%5EDB/CATALOG.db&eqSKUdata=0810838818

http://www.hallrichard.com/newufopage.htm

http://www.qtm.net/~geibdan/framemst.html

http://www.nwlink.com/~ufocntr/

http://www.cufos.org/

http://www.mufon.com/

http://www.ufoseek.com/

http://www.holman.net/ufo/ archives/pics/mexico/

Unexplained Mysteries, 2001, Harmon Publishing Company