Unsplash is a collection of high-resolution stock images by Canada-based design agency, Crew. 10 new photographs are uploaded every 10 days.
Driven by the LOC Prints & Photographs Division, PPOC contains catalog records and digital images from their holdings. These includes photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings.
NGA Images is an online repository of digital images of the collections of the National Gallery of Art. The Gallery has one of the finest art collections in the world with works spanning from the Middle Ages to present day. Their strongest collection is the Italian Renaissance collection, which includes masterpieces from Raphael, Titian, Filippo Lippi and Giovanni Bellini. Through NGA Images, more than 37,000 digital images are available free of charge for download and use.
The collection provides access to more than 125,000 paintings by Dutch artists, such as Rembrandt and Johannes Vermeer. Users can explore and search the entire collection, which is handily sorted by artist, subject, style and even by events in Dutch history. Each painting can be downloaded in high-resolution or view at close-up. The museum also provides an application, RijksStudio, to invite users to create their own masterpieces by downloading images of artworks or details of artworks in the Rijksmuseum collection and using them in a creative way.