Hasbro Toy and Game Instructions: Transformers - Scroll down for downloadable scans of original instruction manuals for US-released Transformers toy lines. - http://www.hasbro.com/default.cfm?page=cs_instructions&letter=T
Botch's Transformers Box Art Archive - Scans of Transformers toy instruction booklets from 1984-1992. - http://botchthecrab.com/archive/instructions/
Ben's World of Transformers - Offers a database of step-by-step toy instructions, categorized under individual toy lines. - http://bwtf.com/
Dave's Transformers Page - Offers paragraph format instructions of how to transform toys. - http://www.eyrie.org/~dvandom/BW/index.html