Despite being a wonderful book, I don't think Hajdamach would be first choice for detailed information on Rd. Nos. Michelle - you'd be better off with either Raymond Slack or better still Jenny Thompson (plus Supplement) - plus, of course, Neil's website
If you remain stumped after all that - and you can let me have details - I can visit TNA at Kew for you.
Despite occasional minor hiccups, the GMB, with its infinite range of members interests - remains the best overall source for information, and everyone should be a member