Sub-series consists of Volumes 122-170 contain seven sets of index cards related to records of the Minister of Transport from 1949 to 1957, apparently used concurrently. Each set consists of index cards organized alphabetically by name of correspondent, or occassionally by subject. The date and purpose of each incoming and outgoing piece of correspondence is recorded on a correspondent's card. For some entries a reference to a file number is also given or, in some cases, a reference to "DMOF" or "Mr. Collins". Mr. Frank T. Collins served as executive assistant to the minister throughout this period. Lionel Chevrier served as Minister of Transport from November 15, 1948 to June 30, 1954, and George Carlyle Marler served from July 1, 1954 to June 20, 1957. The indexing system used during Chevrier's service appears to have been used, largely unchanged, during Marler's time.
Researchers should note that there will occasionally be cross references to files that were not acquired, or in the case of volumes 161 to 170 the index cards cross reference Department of Transport files, presumably received by the Minister's Office but delegated to the Department to follow up upon, which need to be searched out in the Department of Transport fonds. While the provenance and precise filing practices of the Ministers' Office are not known, the index cards appear to be broken down as follows, however, there is much duplication and overlap and researchers should consult each set of index cards when conducting searches:
Index Cards - Air Correspondence - Vols 122-132
Index Cards - National Harbour Board, Board of Transport Commissioners & Canadian Maritime
Commission Correspondence - Vols 133-136
Index Cards - Employment Correspondence - Vols 137-141
Index Cards - Railway Correspondence - Vols 142-148
Index Cards - Marine, Canal, Seaway & Transport Correspondence - Vols 149-151
Index Cards - Tenders, Legislation, Miscellaneous & Correspondence Relating to Government
Departments - Vols 152-160
Index Cards, Department of Transport Files - Vols 161-170
