Safe Kids USA started as the National SAFE KIDS Campaign, a U.S. nonprofit organization, which was founded by Martin R. Eichelberger, M.D. and Herta Feely in 1988. Dr. Eichelberger, as head of the emergency trauma unit at the Children's National Medical Center in Washington, DC, saw many injuries to children that could have been prevented.

Dynamo Playgrounds has been in business since 1993. Their playground equipment is based on the principles of motion, energy, and teamwork, and they manufacture playnets in many sizes and configurations.

A group of industrial leaders from the Midwest met in 1912 because of their concern about safety in the U.S. workplace. They came to the conclusion that there should be an organization to promote safety. A year later in Chicago on October 13, the National Council for Industrial Safety was founded at the Second Safety Congress in New York City with 200 attendees. In order to broaden the scope and to include non-industrial safety issues, the name of the organization was changed to the National Safety Council (NSC) the following year.

The Nuts and Bolts of Playground Construction, written by Paul Hogan, is Volume 3 of A Trilogy of Play and focuses mainly on the "how" of creating play spaces. Written largely as a "how to" book complete with diagrams, designs, and copious pictures, Paul also spotlighted nations where play is honored and includes articles that highlight his philosophy of play.