I would like to add to the above discussion that the BAA Internet shop does not list all the available copies of the Handbook that we have for sale. The office has access to the stock for recent years, but the older stock is kept somewhere else in a storage depot out of London. In fact we have copies for sale for almost every year back to 1938, so if you need a particular issue or a run of years, before the ones available at the shop, let me know and I can advise availability, and we can arrange payment via the BAA office.
The same applies to older copies of the Journal, back to 1934, and the Memoirs (albeit a very patchy stock) back to the same time. Again please write to me as I visit the depot from time to time and can access the issues.