Not commercially available.
digitized 20101201 Sax Communications.
digitized 20130601 CMoG Digital file re-created from digitized DVD made by Sax Communications.
Kenneth Wilson interviews Mrs. O'brien, the secretary of H.P. Sinclaire, H.P. Sinclaire & Co.
Mrs. O'Brien, secretary of Mr. H.P. Sinclaire, H.P. Sinclaire & Co. ; Mr. Kenneth M. Wilson.