William Kelly Wallace

[2] In collaboration with the Manager, James Pepper, he initiated a renewal programme in which, not only were new locomotives built, but suitable classes of older locomotives would be "heavily rebuilt", in the main following the style of the Midland Railway and, later, the London Midland and Scottish Railway (LMS).

As Civil Engineer, Wallace took over the task of completing the new bridge across the River Bann at Coleraine, County Londonderry from Bowman Malcolm.

He oversaw the installation of colour light signalling at York Road station, Belfast which was commissioned in 1926.

In 1946 he designed the Adam Viaduct, the first prestressed concrete railway bridge in the United Kingdom.

[6] He was appointed President of the Institution of Civil Engineers for 1955–56,[7] after being on its council and committees for 11 years.

Wallace's name on the list of Institution of Civil Engineers presidents, at their One Great George Street headquarters