I mentioned this long ago, but didn't have an actual location until today. TucsonModern over on the Phoenix Modern forum found a small group of five Cliff Mays at 20th & Van Buren. Two look pretty good and three appear to have additions. What makes these unique is the use of brick on the some of the exterior and a shake roof. Hopefully there will be more!
I recently traded email with a gentleman who grew up in the house. Charles Desler, now an architect in Sacramento, moved into the house when it was new in 1955. See more photos here