I’ve just printed off this year’s queen/hive number and location card. It fits in my filofax in front of the current individual cards. It’s a system that has suited me for well over a decade now, so my queen numbers are well into 3 figures. I track list the mother and daughters (if known) of each queen so if any useful genetic traits appear I will know where they came from.
The late Dave Cushman (who died about a year ago) put pictures of my cards, together with a full explanation, on his web site, so, if you’re interested google: Chris Slade’s Record Cards.