Wheel_on_“Peggy,”_a_Lima_Shay_Geared_Steam_Locomotive_(SN_2172)
Steven Fine
CC-BY-SA 4.0
US Navy 091114-N-5549O-135 Robert Bowker welds the initials of Susan Ford Bales into the keel of the aircraft carrier Gerald R. Ford (CVN 78) during a keel laying and authentication ceremony
U.S. Navy photo by Mass Communication Specialist 2nd Class Kevin S. O'Brien
Public domain
Fitters with tower rail car and tower truck repairing tramway overhead line
Richard Peter
CC-BY-SA 3.0
Hacker(ni)s_-_Firefox_Appdays_Kathmandu
Avinash
CC BY-SA 2.0
2880px-Mecanica_de_bicicletas_02
Wotancito
CC BY-SA 4.0
SEACComputer 024
National Institute of Standards and Technology
Woman inspecting FOSDIC film
U.S. Census Bureau employees
Skytrain abstract 1
Colin Knowles
