Ada & William Wrigley Jr. Circle

Catalina Island Company

Patricia And Stephen (deceased) Chazen

A.G. Cox Charity Trust

Blanny Avalon Hagenah

The Blanny A. Hagenah Fund at the Chicago Community Foundation

Susan and Phil Hagenah

The Offield Family Foundation

Roy Rose (deceased)

Alison Wrigley and Geoffrey Claflin Rusack