This subseries contains records related to J.W. McConnell’s career between 1900-1930. The records in this subseries are scattered and do not necessarily reflect McConnell’s full role in the various companies he worked with during this period.

Material found in this subseries includes ledgers and record books of various companies in which McConnell was involved, personal ledgers used by McConnell for his finances, charter and minute extracts from the Standard Chemical Company, and financial and bank statements.

Sub-series A-1 contains professional correspondence concerning a wide variety of medical topics, and dating, for the most part, in the 1950s. This sub-series is comprised of 71 files (files no. 1 to 71), which are arranged alphabetically. The records in each file are arranged in reverse chronological order.

Sub-series A-4 contains letters of condolence sent to Wilder Penfield and Avis Cone (Dr. Cone’s wife). It includes articles on Dr. Cone, obituaries, newspaper clippings, and photocopies of tributes. This sub-series is comprised of one file (file no. 106).

This subseries contains records related to J.W. McConnell’s philanthropic and fundraising efforts on behalf of higher education institutions, dating between 1931 and 1960.

Material in this subseries includes addresses, programs and other ephemera, correspondence, reports, commemorative awards, portraits, and mementos.

This subseries contains records related to properties owned by J.W. McConnell or by companies that he worked for.

Material in this subseries includes deeds of sale, correspondence, blueprints, indurance documents and other related documents.

The sub-series consists of a file on the incorporation of a company called "The Christmas Shop Ltd - La Boutique de Noël Ltée" in which Dr. Vineberg, his wife and his stepson were involved. Includes correspondence, an application for incorporation and an affidavit.