Date: July 1921 Creator: O. C. Simonds & Co. Type: Map Description:The outline of the future Lake Marmo is demarcated by colored shading. Locations are shown for eight species of existing woodland cover. Extent: 1 sheet
Date: circa 1921 Creator: O. C. Simonds & Co. Type: Plan Description:Sketch has been repaired and placed in cardboard/clear plastic envelope. Includes plan, section and elevation. (Lake Marmo dam bridge) Extent: 1 sheet
Date: January 25 1978 Type: Audio Description:Lunching and Learning program presented by Clarence Godshalk as he describes the evolution of the Arboretum, from farm land to Arboretum. Extent: 1 audio cassette
Date: April 25 2014 Creator: The Morton Arboretum Type: Photographic image Description:Pinkish-purple flowers of redbuds (Cercis canadensis) in the spring contrast with the dark green spruce along the shore of Lake Marmo at The Morton Arboretum
Date: November 1999 Creator: Mehaffey, Scott A. Type: Photographic image Description:Acer x freemanii (Freeman’s maple) on left and Acer saccharum (sugar maple) on right, along Lake Marmo lakefront, showing fall color Extent: 1 slide
Date: November 27 1978 Creator: Hall, Marion Trufant Type: Document Description:A set of two documents.
The first document is a letter from Marion T. Hall to Jack T. Knuepfer outlining the negative impact of ineffective sewage and stormwater management on the Morton Arboretum's land and waterways.
The second document is a flyer promoting a one day conference sponsored by the George Williams College's Institute for Environmental Awareness. Extent: 4 sheets