Contents of the Collection The Jim Chase Lear Fan Document Control Backup Microfilm Collection contains 94 rolls of microfilms which are the "the last complete microfilm copies of the Learfan Document Control backup, which has the complete drawing package." The microfilm was collected and used by Chase during his tenure as a Lear Fan Limited engineer, 1980-1984. Items are kept in their original boxes and many have labels with limited contextual information, primarily date range and roll number. Examples include...