General Correspondence – Personal letters, re: various matters; includes several letters from family members; two letters from Charles Winter of Militia and Defence Canada, and letters from other acquaintances and friends. Handwritten; Typewritten.
General Correspondence – Personal letters, re: various matters; including congratulations to Steele for his promotion to Winnipeg; a dictated letter from A.M. Jarvis, a letter from R.J. Gwynne and invitations to speak. Handwritten; Typewritten.
General Correspondence – Personal letters, re: various matters; includes a letter from T. Bland Strange, G.A. French, and a letter from a Steele relative discussing his genealogical research into the Steele family; also an invitation for Steele to speak to the Canadian Club of Winnipeg. Handwritten.
Accession consists of talks and papers by Porteous, J. W.: 1 Talk given by J. W. Porteous in London on the occaision of the opening of Leonardo da Vinci's models of invention, 34 pp.  2 Talk "The Possiblity of Adopting Wartime Program in Radio and Rada to Domesic Affairs," by J. W. Porteous, 2 pp. [ca. 1955] 3 Talk "C.K.U.A., 1927-45" by J. W. Porteous. Histocal sketch of C.K.U.A. Radio Station, 4pp. [ca 1950] 4 Talk, "In connection with the visiti to C.K.U.A. of the Edmonton Branch of Engineering Institute of Canada." by J. W. Porteous, 9 pp
Talk , "Voltage, Current and Impedance" by J. W. Porteous, 5 pp.
Correspondence, William Rowan to J. W. Porteous, 1952-11-13
Log Book, VE 4AJS. From 1937-09-24
Correspondence, Charles E. Garnett to J. W. Porteous, 1960-03-29, 2pp.
Royal Society of Arts. List of Fellows. 1959-11-01
Royal Society of Arts. Descriptive Bulletin. 1960
Journal of the Royal Society of Arts 1960-03
Royal Society of Arts. Calendar of Meetings. 1962-02