There is a blog from CUNY’s incredible library staff dedicated to Open Educational Resources.  There resources include:
Art History Teaching Resources
Created by Michelle Millar Fisher (Graduate Center) and Karen Shelby (Baruch)
“On this (beta) site, you’ll find templates for some of the art history survey assignments & exams, chronologically-arranged lesson plans and PPTs, thematic teaching plans and image clusters, and syllabi for a range of art history survey models.”

Critical Thinking: Primary Concepts
Created by James DiGiovanna (John Jay)
“I’ve developed a short, free, Creative Commons-licensed text that’s useful for a brief (maybe 3 week?) critical thinking section in any intro philosophy or composition course (or really, just about any course; it’s been used at my college by professors from a number of departments).”

Visionlearning
Founded by Anthony Carpi (John Jay)
“Our materials, targeted to both students and educators, make peer-reviewed, bilingual content freely available. Visionlearning modules explore specific STEM concepts and examine how we have come to understand them, the people who have contributed to our understanding, and the ongoing research that builds our scientific knowledge.”

Philosophy and Ethics Online Textbooks
Created by Philip Pecorino (Queensborough Community College)
Several complete, free textbooks on philosophy and ethics.

Precalculus Textbook
Created by Thomas Tradler and Holly Carley (New York City College of Technology)
A complete textbook for Precalculus, used in all sections of the course at City Tech. Available in PDF or to purchase as a print on demand book.

Check it out at their blog

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