The Sir Arrol Carrol Collection
- Includes sketches and annotations about major projects that Sir Arrol made contributions.
- http://www.rcahms.gov.uk/publicationarrol.html

William Arrolls Cranes
- Essay by Stuart Cameron tells the story of the four giant Titan cranes on the Clyde where the young William Arrol learned his trade.
- http://www.clydeshipping.co.uk/readmessages.asp?message=7364

Sir William Arrol
- Biography, related records, and references and further reading.
- http://www.geo.ed.ac.uk/scotgaz/people/famousfirst3.html