This series consists of materials related to Catalyst's development efforts. It is arranged in two subseries: Corporate contribution files and History of Giving Box.

The Corporate contribution files subseries consists of an alphabetical file of companies, professional firms, charitable foundations, and other organizations that were (or continue to be) Catalyst member organizations, also called Catalyst Supporters. Catalyst maintains an extensive membership network of regular financial contributors that receive premium content and services. The files represent prospective, active, or inactive Catalyst Supporters. Interactions fall across a wide range and include regular annual contributions, specific gifts and projects, and table purchases for the Catalyst Awards Dinner. Materials include internal notes, telephone call logs, corporate visit logs, correspondence, press clippings, funding proposals, and promotional materials. Photocopies of checks were removed and destroyed. Some files have slips in them indicating that materials older than 1987 have been removed and relocated to another location at Catalyst's offices; these files no longer appear to be extant.

The History of Giving Box subseries consists of an alphabetical card file, referred to internally as the History of Giving Box, recording financial contributions to Catalyst from companies, professional firms, charitable foundations, and other organizations. These include Catalyst Awards Dinner table purchases, annual contributions, Felice N. Schwartz Fund contributions, and special projects. A card giving a key to the abbreviations used in the file precedes the file contents.