Born-Digital or AnalogAnalogTranscriptMcQuaid, Dan J. Denver consulting engineer invented Air-Vu system of drawing instruments; Sun-Vu machines now built in Denver. " Post. June 10,1948. p.2. Machine invented in Denver by McQuaid makes perspective pictures. Post Aug. 19, 1952 p. 25.CollectionWestern History Subject IndexRelated MaterialWestern History Subject Index AbbreviationsType of MaterialIndex CardLanguageeng
