While the focus of this project is on Spanish as spoken in Texas, it contains a wealth of Open language resources that can be repurposed, including a ready-made Canvas course. Here are some highlights:
Features a series of three Spanish language textbooks written by Jarod Reynolds, a community college Spanish instructor in Arizona. It contains explanations, examples, fill-in-the-blank activities, reading activities, writing activities, and speaking activities. All are available on OER commons under an Attribution-Non-Commercial-ShareAlike 4.0 license.
Beginning Spanish 102 TPRS: Teaching Proficiency through Reading and Storytelling.