The Mercurians began meeting in 1986 for the purpose of generating networks between people who share work and interests in the history of communication technologies, defining the field broadly. Our activities include publishing a semi-annual newsletter, Antenna, meeting annually at Society for the History of Technology (SHOT) conferences, organizing paper sessions for SHOT meetings, and pursuing contacts between meetings. Antenna serves both as a clearing house for readers and an informal forum for their ideas. We welcome contributions, including notices and queries about Mercurians' projects as well as short essays on their work. Antenna includes book reviews and other materials about conferences, museums, publications, archives, funding, and other pertinent materials.