It was out in the early 70s. An A3 format. I had all of them, but over the years as I've moved house, they have gone awol😢
I've been on line bidding for the first 10 on offer, but every time I bid, a millisecond later someone bid more. Don't know if this is a scam to get more out of me but it went a bit daft.
If there is anyone who has this collection in part/full and would like to sell, just pm me please.