[2] The Royal Rosarian Milk Carton Boat Race takes place every summer in the park's casting pond.

[4] It was named after a student at Reed College, Hugh Broomfield, who was a pilot who died during World War I while in combat.

[2] The casting pond was completed that year, but about June 1937 other construction halted due to funding, but resumed in July 1939.

[5] The project included conversion of the duck pond into wetlands, the installation of a nature-based playground featuring boulders and logs, and the addition of more paths.

[7] The United States Army Corps of Engineers assisted on the project, which cost $1 million to complete.