Janet, That link is a boom of information,so I'm writing to thank you and suggest it to others. I have copies of Ordnance maps but had no idea there was so much info to explain what's on them, Mary In a message dated 5/5/2010 10:35:31 A.M. Pacific Daylight Time, glaschujan@yahoo.co.uk writes: http://www.spns.org.uk/bibliography09.html