Slightly off topic from railways but posting in case any one is interested. Found an author on Amazon who is selling several books of London Bus drawings, his London Country Leyland National one appears to be currently free on kindle:
http://www.amazon.co.uk/dp/B00HKY3QQO/ref=la_B00J72FADE_1_5?s=books&ie=UTF8&qid=1432042665&sr=1-5
Worth a look, I've since purchased the London double deckers one which is very good.
http://www.amazon.co.uk/dp/B00HKY3QQO/ref=la_B00J72FADE_1_5?s=books&ie=UTF8&qid=1432042665&sr=1-5
Worth a look, I've since purchased the London double deckers one which is very good.