Useful engineering history web links evaluated and selected by a network of subject specialists are listed below: 

IMechE Engineering Heritage
Explore the history of mechanical engineering; learn about the Institution of Mechanical Engineers or find out about 1 Birdcage Walk, the headquarters of the Institution

Henry Cort
The life and work of Henry Cort (1740 - 1800), known as the 'Father of the Iron Trade'

NASA History Division
Documents and preserves the agency's history