This antique street plan is from Philips' Handy-Volume Atlas of London, third edition, published by George Philip & Son, London, 1907.
The map which folds in half is printed on one side only and measures 21 cm x 17.5 cm or 8" x 7". 
This is an original antique, over 115 years old.  
If you have any questions please don't hesitate to ask.