Given the broad nature of your query, here are a few potential areas of interest:
University libraries and historical societies are the primary custodians of these rare images. For instance, the University of Arkansas Libraries houses a MDID database with over 30,000 architectural images. These institutions explicitly state that any images used on instructional web sites to comply with licensing terms. SCHOOL MODELS RARE PICS PASSWORD
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Given the broad nature of your query, here