Introduction We have made considerable progress on the Interlisp software preservation project, and we want to offer tours and collaboration for those engaged in similar or related software preservation efforts. Interlisp was an early and unique software development environment (IDE) developed in the 1970’s and 1980’s at Xerox PARC, and a testbed for novel software development tools. The Medley version of Interlisp-D was built as a portable Virtual Machine, which has allowed us to bring t...