Might be handy to read
http://en.wikipedia.org/wiki/1912
http://www.chemainustheatrefestival.ca/season_calls_england.html
An Inspector Calls Design notes

http://www.aninspectorcalls.com//pdf/insp_pack_new.pdf A MUST READ, REALLY HELPFUL FOR RESEARCH!!!

Year and month
What happens
September 1910
Eva sacked by Birling & Co.
December 1910
Eva employed by Milwards.
Late January 1911
Eva sacked by Milwards.
March 1911
Eva becomes Gerald's mistress.
Early September 1911
Gerald breaks off the affair.
Eva leaves Brumley for two months.
November 1911
Eric meets Eva.
December 1911/January 1912
Eva finds she is pregnant.
Late March 1912
Mrs. Birling turns down Eva's application for help.
Early April 1912
Eva's suicide/the Inspector calls*


Here's a very long essay, however extremely insightful one of Nietzsche's sociology. Read it!
An Inspector Calls Reasearch
An Inspector Calls Character notes

Geography

The United Kingdom, consisting of Great Britain (England, Wales, and Scotland) and Northern Ireland, is twice the size of New York State. England, in the southeast part of the British Isles, is separated from Scotland on the north by the granite Cheviot Hills; from them the Pennine chain of uplands extends south through the center of England, reaching its highest point in the Lake District in the northwest. To the west along the border of Wales—a land of steep hills and valleys—are the Cambrian Mountains, while the Cotswolds, a range of hills in Gloucestershire, extend into the surrounding shires.
Important rivers flowing into the North Sea are the Thames, Humber, Tees, and Tyne. In the west are the Severn and Wye, which empty into the Bristol Channel and are navigable, as are the Mersey and Ribble. AT THE TIME!!