michelle watts
http://www.amazon.com/Quilts-Southwe.../dp/1574328891

Ms. Watts has an entire book out on SW styled quilts. Including Squash Blossom. Awesome quilts that will make you want to invest in beautiful earth tone fabrics. I am working on a Medallion quilt that will someday grace the nicest bed in my house. I wandered into a quilt shop in Santa Fe while on vacation a couple of years ago and found even more of her patterns that I had never seen before. Look her up. It will be worth your while.
tim in san jose

Two patterns by Cut Loose Press

Sonoma (singke color) and Diablo ( multi color). On my bucket list!

sandy

Try this site also: https://www.swdecoratives.com

Check out a pattern called " Montana"https://www.etsy.com/listing/206614680/iquilt-modern-modern-montana-quilt?utm_source=google&utm_medium=cpc&utm_campaig n=shopping_us_b-craft_supplies_and_tools-other&utm_custom1=5fe0336e-bfcb-4fa2-9c45-ae7f6e8727a7&gclid=CjwKEAiAuKy1BRCY5bTuvPeopXcSJAA q4OVspjWreiWMl9UQq-lW87XWe4957rwMNOPFb8pFmZVSihoC6Obw_wcB

You might try Diane's Native American Quilts http://www.nativeamericanstarquilts.net/

A lot of Southwestern patterns have more acute angles than HSTs. It would be a good idea to make a sample block first to see how you handle it or even alter it. You can always use this sample later for the front of a tote bag. It is also a great way to audition the southwestern color palette.