Karen
I have the book 101 Log Cabin Blocks by Linda Clausee which was bought in hobbycraft.
There are two patterns in there similar to the block on your bag.
One is Spinning Log Cabin & the other is Toppling Log Cabin.
I can photocopy both & pop them in the post to you, don't know exactly where you are in South Yorks but I am in Nottingham.
PM me your address if you want them.
Tisha