"TinEye is a reverse image search engine. You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions." You can also enter the URL for an image.
"The holdings of the National Archives Still Picture Branch include 226 photographs taken for this project, most of them signed and captioned by Adams. They were taken at the Grand Canyon, Grand Teton, Kings Canyon, Mesa Verde, Rocky Mountain, Yellowstone, Yosemite, Carlsbad Caverns, Glacier, and Zion National Parks; Death Valley, Saguaro, and Canyon de Chelly National Monuments. Other pictures were taken at the Boulder Dam; Acoma Pueblo, NM; San Idelfonso, NM; Taos Pueblo, NM; Tuba City, AZ; Walpi, AZ; and Owens Valley, CA. Many of the latter locations show Navajo and Pueblo Indians, their homes and activities." From the U.S. National Park Service (NPS). Note: Please scroll down their page for links to the photos.
"The BLM Historical Photograph Collection visually documents the operations and people of the Bureau of Land Management (BLM) from the 1930s, when the bureau was known as the General Land Office, through the 1960s, after the General Land Office had merged with the U.S. Grazing Service to become the BLM." From the Bureau of Land Management.
Photo essays on topics such as: History (Civil Rights, Crime, to World War II), Culture (Animals to Work), Icons (Actors, Actresses, Athletes, Musicians), Curiosities, Photographers (arranged alphabetically by first names).
"Collected from nearly 30 contributors - all bringing new life and context to the 1969 Woodstock Music & Art Fair." Includes video as well as still photos. From Bethel Woods Center for the Arts.
"This ever-expanding gallery is your entry point into the vast visual holdings of the Archives. The Online Gallery provides free and open research access to over 800,000 items digitized from the Municipal Archives' collections, including photographs, maps, motion-pictures and audio recordings. The holdings are arranged by collection; or you may search All Collections by keyword or any of the advanced search criteria."
Search or browse. Topics include: Business and Labor, Environment and Landscape, Health Care, Legal, Military, People, Groups, and Cultures, Politics, and Transportation.
"Provides free and open access to over 800,000 images digitized from the The New York Public Library's vast collections, including illuminated manuscripts, historical maps, vintage posters, rare prints, photographs and more." From the New York Public Library.
"Included are images from current exhibits, Smithsonian events and historic collections." Images can be downloaded for personal and educational use and also prints can be purchased. From the Smithsonian Institute.
"Download, share, and reuse millions of the Smithsonian's images - right now, without asking. With new platforms and tools, you have easier access to nearly 3 million 2D and 3D digital items from our collections - with many more to come. This includes images and data from across the Smithsonian's 19 museums, nine research centers, libraries, archives, and the National Zoo."
"The photos you see here are a sample of the more than 13 million images in some seven hundred collections in our museums, archives, and research centers. These collections contain photographs collected from outside sources in addition to those taken by Smithsonian staff, and represent a broad range of subjects and themes in the fields of art, history, culture, and science." From the Smithsonian Institute.
A compilation of 100 photographs with texts of the American Civil War made by Alexander Gardner and other photographers. "The photographs depict the sites and aftermath of important battles, such as Bull Run, Antietam, and Gettysburg, as well as the forts, military structures, and scenes associated with the war."
"The Getty makes available, without charge, all available digital images to which the Getty holds the rights or that are in the public domain to be used for any purpose."
"IMAGE provides access to CSU collections of images for teaching and research. The collection includes images for the art history survey and historical images from a wide variety of fields, including political and cultural history, anthropology, biology, medicine and technology. Plans are to add image collections which concentrate on specific subject areas. Access to the collection is currently available through the WorldImages Database which contains more than 50,000 images from throughout the world." From California State University.
"As the Smithsonian acquired its philatelic and postal operations collections, it also acquired original images and photo-reproductions illustrating ... the history of the postal service in the United States and other countries [and] the hobby of philately and philatelists"
"For those who seek knowledge and inspiration from visual materials, the Picture Collection Online presents more than 30,000 digitized images from books, magazines and newspapers as well as original photographs, prints and postcards, mostly created before 1923." Provided by the New York Public Library.
"Simple, fast, free photo galleries. No login required, just upload images and go.... folio.ink was created to be a fast, efficient way to share a collection of images and gifs in a polished presentation. It was designed with this one job to do, and it is completely free." Create your own photo galleries.
Advanced online image/photo editor which states it can open Photoshop (PSD), GIMP (XCF), CorelDRAW (CDR) files, and more. Supports layers and numerous other advanced editing tools.
"Krita is a professional free and open source painting program." Supports "natural brush painting" and other digital art techniques. Available for Windows, Apple, and Linux.
"Newsreels were shown before every feature film and in dedicated newsreel theaters located in large cities. Universal Newsreel, produced from 1929 to 1967, was released twice a week. Each issue contained six or seven short stories, usually one to two minutes in length, covering world events, politics, sports, fashion, and whatever else might entertain the movie audience." From the Internet Archive.