217 Free Photos of How It Works

historyhistoricalnational child labor committee collectionemployeeinvasionlampreyfield workinvasive speciessea lampreypeople & partners
Log Cabin Entry
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Sea lamprey crews must test the pH levels in each creek to determine how much lampricide to use for a treatment.
sciencepeople
These are cashiers in Holmes Department Store, New Orleans. The youngest girls working in the store and illustrate how well the law is being enforced in all the department stores here. LOC nclc.04922
historicalhistory
Young spinners and doffers in Richmond Spinning Mills, taken during working hours. Smallest girl said she had been working there for months. The other girl said she didn't know how long. LOC nclc.01966
historicalhistory
How To Make a Herringbone Floor
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A 'Demonstration team' composed of three prize-winning Cabell County girls. They are showing the visitors at the Fair how team work makes for efficiency in canning their farm products. State LOC nclc.04385
historicalhistory
A 'Demonstration team' composed of three prize-winning Cabell Co. girls. They are showing the visitors at the Fair how team work makes for efficiency in canning their farm products. State 4 LOC nclc.04387
historicalhistory
These are cashiers in Holmes Department Store, New Orleans. The youngest girls working in the store and illustrate how well the law is being enforced in all the department stores here. LOC nclc.04920
historicalhistory
Cherryville Graded School, Cherryville, N.C. These are all the children in town who attend school. 2,000 population. One-third of these raised their hands when asked, 'How many have worked LOC nclc.01403
historicalhistory
Fish Biologist Cheryl Kaye analyzes non-target species to determine how to best treat streams for sea lamprey and minimize mortality to sensitive fish species.
sciencepeople
The tables turned - how our streets will look next year as a result of the Chinese invasion (caricature of Chinese men as babysitters and servants, man carrying sign Chinamen for all work, LCCN2001696527
historicalhistory
Going to work at 5-30 A.M. April 24, 09. Small boy names (i.e., named) Jo. is a sweeper in Mill Mfg. Co. Lewiston, Me. Been there 2 years. I saw him working inside. Said he didn't know how LOC cph.3b37909
historicalhistory
S.D. Ison and family. Father works some. Both boys on right of photo have been in Washington Cotton Mills, Fries, Va., for four years. When I asked the smallest worker how old he was, he LOC cph.3a29778
historicalhistory
2017 Student Summit on Climate Change - Joshua tree Monitoring Project - Students and park staff attend training on how to collect data for the Joshua tree monitoring project
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Carrie Blanchard. 'Don't know how old I am. Mother can tell. She keeps track of these things. She begins to work in mill tomorrow. 'Speks I'll go to help.' (Mother said she was 10 years LOC nclc.01458
historicalhistory
Nik Rewald, Biological Science Technician, teaches Joanna Gilkeson, Public Affairs Specialist, how to electrofish for sea lamprey in Pendills Creek in upper Michigan.
employeepeople
111-SC-330445 - How 81mm mortar observers work, is demonstrated by SSGT Glenn K. Keller, left, and PFC Virgil Williams, using binoculars and phone, near Oberwampach, Luxembourg. Both Men are with the 90th Infantry Division
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