https://tucson.com/news/retrotucson/photos-nogales-road-trip-in-1956/collection_5688fbfc-25c6-11e5-867d-d30504090f52.html
QuoteTucson Citizen photographer Preston Yeager took a drive to Nogales, Sonora, in July, 1956 on Old Nogales Highway, U.S. 89.
Boatload of pics at the link. A couple of the ones most relevant to us:
(https://bloximages.chicago2.vip.townnews.com/tucson.com/content/tncms/assets/v3/editorial/4/e8/4e856ab2-25c6-11e5-92f0-1b27a6a672ec/559dad8790a0a.image.jpg)
(https://bloximages.chicago2.vip.townnews.com/tucson.com/content/tncms/assets/v3/editorial/5/08/5088f888-25c6-11e5-ab6d-6f4ad83f2b4f/559dad8aeba4a.image.jpg)
(https://bloximages.chicago2.vip.townnews.com/tucson.com/content/tncms/assets/v3/editorial/4/fe/4feffc6e-25c6-11e5-903b-5b9f7a45c35e/559dad89eb367.image.jpg)