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1. Man standing in front of lab equipment and mice

2. Woman in a lab holding a beaker

3. Boy posing in chemistry lab

4. Exacting chemical reduction experiment occupies Shelby Walters, Naval Research Laboratory chemist

5. Interior of test room showing humidity and heat units

6. Interior view of text room through window showing technician testing surface drying rates of artists' oil paints with the sand...

7. Interior view of text room through window showing technician testing surface drying rates of artists' oil paints with the sand...

8. A scientist at the Naval Research Laboratory makes a delicate adjustment on one of the many pieces of complicated equipment...

9. Scientists assemble gear, above, and prepare for an experiment in one of the big temperature chambers at the Naval Research...

10. A three-story temperature room where atmospheric conditions are controlled

11. Typical set-up for experiments in distillation is this rack in the chemistry section of Naval Research Laboratory

12. Young man by chemistry equipment

13. Young woman in chemistry lab

14. View of a piece of equipment

15. 24 Watts, Santa, Guinea pigs

16. Biddy and the mouse

17. Crewel embroidery

18. Drowned rat from Dr. Peter V. Karpovich's study on Water in the Lungs of Drowned Animals (1933)

19. Every child's shoe should be protected from wear at the toe. Puppy wonders where his game has gone, as parents do at the size...

20. A group of boys watch three large unidentified rodents in a zoo exhibit