Here's an article about some of Marana's history

[Ptah]

http://www.azstarnet.com/accent/139067

Marana's Kais
They came from China to amass great wealth — and endowed their community

Tucson, Arizona | Published: 07.23.2006

John Kai Sr. was a patient, persistent man. He fought racism and the raw
desert and used his family's success to boost the Chinese community in
Tucson and influence the development of Marana.

When Kai first came to Marana in the early 1930s, the struggling town was
home to a handful of farming families. When he bought his first parcel of land in
1935, the town didn't even have a grocery store. He built a commissary,
saving the farmers a trip to Tucson for fruit and vegetables.

Today, Marana is a booming suburb whose population has rocketed from a
bout 2,100 in 1990 to more than 26,000 in 2005, according to the U.S. Census Bureau.

But the town's rapidly increasing subdivisions belie its origins. Contractors and businessmen
idn't build Marana. Farmers did. Families with names like Gladden, Aguirre and Honea,
now names on roads and subdivisions, helped found this town and strode through its past.