i know its a long shot,
but does anyone know of any photos of norfolk park before gleesons started building,
the only pictures i have got are during or after the work.
especially photos of bluestones school

The Sites and Monuments Record office in howden house hold a reasonable collection of aerial photos that might be worth looking at. you have to get in touch with them and make an appointment, and normally have to have a good reason for wanting to look at them (research etc) but they are very nice :)

http://www.sheffield.gov.uk/in-your-area/planning-and-city-development/urban-design--conservation/archaeology