Title from cover.
"A completely reworked and extended version of Aspirin, Bromide and Benjamin, a booklet that grew out of a chapter in the group's book World War II in Charley : Charnwood's hidden parish."--Title page verso.
Battling the beams : Charnwood's top secret war with Luftwaffe navigation by Charley Heritage Group. ISBN 9780956341549. Published by Charley Heritage Group in 2014. Publication and catalogue information, links to buy online and reader comments.