This collection contains chiefly correspondence, but also includes professional publications, seminar lectures and writings as well as family genealogy. Correspondence consists of letters and statements to residential clients, corporations, and government entities. Letters to local landscape architects, professional organizations, and family members are also included. Documents provide insight into Martini's work with site planning, subdivision planning, and career development. Personal letters offer details of Martini's involvement with the Northside Methodist Church, parent teacher associations, and investment opportunities.