Saw mention of the Imago database on the Classicists list and I don’t think I’ve mentioned it before. Here’s a bit from their ‘About’ page:
IMAGO was conceived in 2010 to commemorate the Roman Society’s centenary. It is intended to be used by students, teachers, lecturers and everyone interested in the archaeology, history and material culture of ancient Rome.
Photos are donated and available to use and share for educational and research purposes only, and downloadable images can be quickly saved or copied into presentation software such as PowerPoint.