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The U.S. Naval Institute on Naval Tactics: The U.S. Naval Institute Wheel ... - Google Books

https://books.google.de/books?id=s3NaBgAAQBAJ&pg=PA74&dq=Shlomo+Erell&hl=de&sa=X&ved=0ahUKEwiGnc2Mt5XeAhWKKiwKHZ7VDKUQ6AEIOTAC#v

“Wheel books” were once found in the uniform pockets of virtually all junior officers and many senior petty officers. Each small notebook was unique to the Sailor carrying it, but all had in common a collection of data and wisdom that the individual deemed…