Business and administrative records for the Institution (IMechE) from founding discussions on. Some post-1930s records are closed due to data protection etc, business papers less than 30 years old are also closed.
Council minutes, drawings for 1 Birdcage Walk (Headquarters), historic photographs and some ey membership profiles (including past Presidents) are online - digitised items.
Membership forms up to and including 1930 are online - Ancestry links.