Architect William Krisel was still alive during production of the film and he had the producers jump through many hoops to prove that his participation was a value-add. Ultimately, he declined to be interviewed on camera, but did provide the end quote in the film for the producers to use, for which they are grateful.
While filming an interview, the producers met a contractor whose father had been an apprentice carpenter for the Alexander Construction Company. Now in his late seventies, he agreed to be interviewed in the film about how these homes were built within three weeks. Hoping to interview other trades, the producers placed ads, contacted unions and attempted to find other laborers to no avail. Joe Contreras was the only surviving worker and had a severe stroke shortly after filming was completed.