Hi Andrew I used a book called Moon Mars and Venus A concise guide in colourpublished by Hamlyn in 1978. It contains the Rukl map in small sections and is very easy to use at the telescope Attached is a one of the sections which I have scanned. It is available from Amazon as a used book for about £20
https://www.amazon.co.uk/Moon-Venus-Concise-Guides-Colour/dp/0600362191
