Source:Computalker Consultants, Sant Monica, CA (1976)
Computalker Model CT-1 Speech Synthesizer Product Sales Sheet , illustrated with photographs, prices, chart, price list, and narrative text. J.L. Cooper went on to form Audio company of the same name. Additional info found at:http://www.mindspring.com/~ssshp/ssshp_cd/ss_com.htm. see also Smithsonian Speech Synthesis History Project.