Photo of Main Street Sayre, Oklahoma, in 1903.
Massachusetts, 1912...
Photographer's Caption
Crocheting on underwear at home. Carmina Caruso, 10 years old, a regular worker; sister Mary, 5 years old, learning; mother and neighbor sitting out in unkept [i.e., unkempt?] side yard all day long. Sometimes they walk up and down the street as they work. 18 South Street, Somerville, Massachusetts...
Source
National Child Labor Committee Lewis Hine photographer
Manned Space History Extra!
Iin 1962, North American Aviation - prime contractor for the Apollo spacecraft - awarded a development contract for the Apollo spacecraft fuel cell to Pratt & Whitney Aircraft Division of United Aircraft Corporation.
The Apollo Command Module's primary source of electric power was from a set of three "fuel cells" housed in the Service Module. Each fuel cell combined hydrogen and oxygen to produce electricity and water. The water was used for drinking by the astronaut crew. Each of the fuel cell power plants contain 31 separate cells connected in series. Each cell had a hydrogen and an oxygen compartments and electrodes and, in combination, produced 27 to 31 volts. Normal power output for each power plant is 563 to 1420 watts, with a maximum of 2300 watts (source: NASM).
The image below shows an Apollo fuel cell that was used for simulation purposes.