Registry of U.S. Government Publication Digitization Projects

I didn't know the Registry of U. S. Government Publication Digitization Projects existed:

"The Registry contains records for projects that include digitized copies of publications originating from the U.S. Government. It serves as a locator tool for publicly accessible collections of digitized U.S. Government publications; increases awareness of U.S. Government publication digitization projects that are planned, in progress, or completed; fosters collaboration for digitization projects; and provides models for future digitization projects."

The Registry has recently been updated, and they welcome additions. Institutions need to apply to contribute.