In planning this layout I have been lucky in that photographs, plans and drawings have been published although as noted earlier I have had to prepare my own drawings for many of the buildings. References used include:

Branch lines of the Southern Railway Volume One by Reeve & Hawkins (Wild Swan 1980)
The Longmoor Military Railway A new history Volume one by Ronald & Christensen (Lightmoor 2012)
Country Railway Routes Woking to Alton by Mitchell & Smith (Middleton 1988)
Branch line to Longmoor by Mitchell & Smith (Middleton 1987)
The Bordon Light Railway by Harding (Harding 1987)
An historical survey of Southern sheds by Hawkins & Reeve (OPC 1979)
British Railway Pictorial Railways of Hampshire by Burges (Ian Allan 2006)
Modelling the Southern Volume 1 Ideas and Inspiration by English (Noodle 2012)
30 years ago Bentley-Bordon by Raynsford (Railway World April 1987)
Bentley to Bordon by Swain (British Railways Illustrated April 1995)

Plus photographs from eBay vendors notably Redgate8 and property searches