Dennis Fitzgerald, UM football, 1961, in leather helmet

[Fitzgerald was last Michigan player to wear a leather helmet. Pictured holding the model worn by other players, says leather helmet fits better and gives him more freedom of movement. (from note in neg. envelope.)]

Impact of motorcycle helmet usage in Colorado : final report /

September 1978.

Evaluation of state motorcycle helmet laws using the National Electronic Injury Surveillance System. Final report.

Mode of access: Internet.

Safety helmet performance investigation. Volume I. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

The effect of motorcycle helmet usage on head injuries, and the effect of usage laws on helmet wearing rates.

Mode of access: Internet.

Safety helmet performance investigation. Volume II: appendices A through L. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

I. Safety belt usage among drivers. II. Use of child restraint devices, passenger safety belts and position of passengers in cars. III. Motorcycle helmet usage. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Impact of the repeal of the Kansas mandatory motorcycle helmet law: 1975-1978. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Impact of motorcycle helmet usage in Colorado: a three year study. Executive summary. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Impact of motorcycle helmet usage in Colorado: a three year study. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Impact of motorcycle helmet usage in Colorado: a three year study. Technical appendix. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Impact of motorcycle helmet law repeal in South Dakota, 1976-79: executive sumary. Final report.

National Highway Traffic Safety Administration, Washington, D.C.