Andrena carlini, f, face, Cecil Co. MarylandA dark spring Andrena mining bee seen throughout the East in woodlands and the… https://www.rawpixel.com/image/8755286/photo-image-public-domain-black-background-beeFree Image from public domain license
Magnifying glass from Gately's World's Progress. A General History Of The Earth's Construction And Of The Advancement Of… https://www.rawpixel.com/image/571665/magnifying-glass-vintage-styleFree Image from public domain license
Balance hydrostatic from Six Weeks Vacation by Paul Poire (1880). Original from the British Library. Digitally enhanced by… https://www.rawpixel.com/image/572601/scientific-apparatus-vintage-drawingFree Image from public domain license
The 2,000 year-old Sicilian state library suffered some damage when the Germans were driven from Sicily but a special… https://www.rawpixel.com/image/12296522/photo-image-person-book-public-domainFree Image from public domain license
Dog with rickets. U.S. National Agricultural Research Center. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249770/image-dog-plant-grassFree Image from public domain license
Roundworms. U.S. National Agricultural Research Center. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249630/image-art-cartoon-animalFree Image from public domain license
[Untitled photo, possibly related to: Doctor examines fractured arm, FSA (Farm Security Administration) camp clinic… https://www.rawpixel.com/image/12254037/photo-image-face-hand-personFree Image from public domain license
Washington, D.C. Arthur H. DeBre, director of research of the Motion Picture Producers and Distributors of America, giving a… https://www.rawpixel.com/image/12298066/photo-image-person-art-technologyFree Image from public domain license
Test tubes containing bovine tubercular bacteria at Division of Pathology, United States Department of Agriculture… https://www.rawpixel.com/image/12266972/photo-image-public-domain-laboratoryFree Image from public domain license
Doctoring a sick sheep. U.S. National Agricultural Research Center. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249758/image-face-person-artFree Image from public domain license
Professor R.M. Hixon, right, who is doing research on the properties of starch made from "Iowa waxy maize," a hybrid corn… https://www.rawpixel.com/image/12287337/photo-image-person-public-domain-factoryFree Image from public domain license
U.S. Naval Academy, Annapolis, Maryland. Class in physics. Sourced from the Library of Congress. https://www.rawpixel.com/image/12289394/photo-image-people-shirt-technologyFree Image from public domain license
Miguel Manresa, Jr., a graduate student from Laguna, Philippine Islands. He is doing research on the effect of vitamins on… https://www.rawpixel.com/image/12340411/image-face-person-technologyFree Image from public domain license
[Untitled photo, possibly related to: Some of the thousands of baby chicks brought by FSA (Farm Security Administration) as… https://www.rawpixel.com/image/12277259/photo-image-background-cat-artFree Image from public domain license
D-S store at the Douglas-Simmons Elementary School, Washington, D.C. The children are using the store to learn how to shop… https://www.rawpixel.com/image/12294638/photo-image-person-pharmacy-public-domainFree Image from public domain license
National Agricultural Research Center, U.S. Department of Agriculture. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249667/image-plant-hand-personFree Image from public domain license
Thorny-headed worms. U.S. National Agricultural Research Center. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249649/image-dog-cat-artFree Image from public domain license
Packaging butter. Land O'Lakes plant, Minneapolis, Minnesota. Sourced from the Library of Congress. https://www.rawpixel.com/image/12286409/photo-image-plant-person-technologyFree Image from public domain license
Chicago, Illinois. Subsistence research laboratory of the U.S. Army quartermaster depot. K ration is highly concentrated… https://www.rawpixel.com/image/12294330/photo-image-paper-tape-public-domainFree Image from public domain license
Ojo Sarco, New Mexico. One-room school in an isolated mountainous Spanish-American community, which has eight grades and two… https://www.rawpixel.com/image/12290885/photo-image-book-public-domain-childrenFree Image from public domain license
Erlenmeyer flasks full of liquid and wood samples. Forest Products laboratory, Madison, Wisconsin by Russell Lee https://www.rawpixel.com/image/12147584/image-art-vintage-forestFree Image from public domain license
Beltsville, Maryland. Indian scientists visiting the Agricultural Research Center. Left to right: Dr. H.D. Barker, Dr. E.E.… https://www.rawpixel.com/image/12298056/photo-image-paper-people-bookFree Image from public domain license
[Untitled photo, possibly related to: Kingman (vicinity), Arizona. Mr. Relling, in the laboratory, analyzing tungsten ore… https://www.rawpixel.com/image/12297283/photo-image-face-plant-personFree Image from public domain license
Cow infested with bloodsucking ticks. U.S. National Agricultural Research Center. Sourced from the Library of Congress. https://www.rawpixel.com/image/12249743/image-dog-frame-cowFree Image from public domain license
Beltsville, Maryland. Indian scientists visiting the Agricultural Research Center. Left to right: Dr. E.E. Berkley, Dr. E.C.… https://www.rawpixel.com/image/12297810/photo-image-people-shirt-public-domainFree Image from public domain license
Chicago, Illinois. Subsistence research laboratory of the U.S. Army quartermaster depot. Captain C.M. Wilson, examining… https://www.rawpixel.com/image/12294345/photo-image-hand-person-technologyFree Image from public domain license