This collection consists of corporate records from Collins Radio Company, a communications and aerospace company based in Cedar Rapids, Iowa. Records include correspondence, company memoranda, publications, research files, product information and advertising, customer information, subject files, photographs and blueprints. The collection is divided into several series. Some topics and activities may be documented across multiple series (for example, both Administrative Files and Subject Files may have records relating to the same topic). Series 1. Administrative Files: Files relating to the administration and operations of the Collins Radio Company. Includes correspondence, memoranda, administrative documentation, and other organizational materials. Series 2. C-System Files: Files relating to the development of the Collins C-System. The C-System was a major concept developed by CRC starting in the mid-1960s, designed to integrate computers and communications techniques into a single system capable of accomplishing all the major activities of a particular organization or enterprise. Includes background research documentation, component and system manuals and descriptions, and working papers. Series 3. Customer Files: Files relating to specific customers of CRC. Includes correspondence. Series 4. Product Files: Files relating to various products created by CRC during its corporate existence. Includes advertisements, instruction manuals, and product descriptions. Series 5. Publications: Various publications of CRC. Series 6. Research Files: Files relating to various research endeavors carried out by CRC on a number of different subjects relating to communications and aerospace technology. Includes data, notes and research papers. Series 7. Subject Files: Files relating to various subjects involving CRC. Includes correspondence, corporate documentation, and documentation from Arthur A. Collins and his father Merle H. Collins. Series 8. Visual Materials: Includes photographs of various subjects, and blueprints and schematics of some CRC products and components.