Lewis Mumford

A 1950 letter to Henderson from internationally known author Lewis Mumford.  In the last paragraph Mumford compares letters received from Henderson and from Henry L. Kamphoefner (NC State University School of Design's Dean), both recounting a recent visit to Raleigh and presentation by Frank LLoyd Wright.  Mumford concludes that geniuses like Wright are "Messy people to have around: best worshipped at a distance --- dead."

Roberto Burle Marx

A 1966 letter to Henderson from internationally known Brazilian landscape architect Roberto Burle Marx. Burle Marx expresses the love he shares with Henderson for the "rich misteries [sic] and striking world of the plants ... It is a pitty [sic] that we cannot in life be more together to speak about things that have a profound and deep meaning for us."