Examples of oil and gas engines as portable engines are seen, for example, in "'Gasoline Engine Department' column", Threshermen's Review, 13 (4): 16–17, August 1904.
Simkin, John. "Floodlit Football". The Encyclopedia of British Football. Spartacus Educational. Archived from the original on 2008-01-11. Retrieved 2008-01-04.
web.archive.org
Simkin, John. "Floodlit Football". The Encyclopedia of British Football. Spartacus Educational. Archived from the original on 2008-01-11. Retrieved 2008-01-04.