Yes, my chickadees, I know you’ve been champing at the bit for the latest Library of Congress/Dewey Decimal System subject mappings, so here, my gift to you, is a veritable smorgasbord. Tuck in. These numbers come from here, here, here, here and here.

• Rhyming number: Barbadian Canadians – 305.896972981071
• Most Victorian number: Baker Street Irregulars (Fictitious characters) – 823.914
• Hang on, it’s on the tip of my tongue…: Amnesiacs – 616.852320092
• New word for your vocabulary: Krumping – 793.3
• “A voice in my head told me to do it”: Mental illness in the Bible – 220.83622
• Monsters in the next series of Doctor Who: Active food packaging – 664.09
• Most boring number: Cavity wall insulation – 693.832
• Most boring number: Micro-drilling – 621.952
• Been there, done that: Low-income college students – 378.19826942
• Erm, the German Embassy: 21-23 Belgrave Square (London, England) – 725.17
• Most fun number: Alton Towers (England) – 791.06842514
• Most hairy number: Beards in literature – 808.803559
• Another new word for your vocabulary: Washint – 788.35
• Most pointless number: Electric engineers’ spouses – 621.3092
• Careful now: Christmas trees–Fires and fire prevention – 363.379
• Most Scottish number: Balamory (Scotland : Imaginary place) – 791.4572
• Most obscure illness number: Pseudoxanthoma elasticum – 616.5
• Really young professionals: Child psychoanalysts – 618.928917092
• Josiah Bartlet and David Palmer don’t qualify, sadly: Presidents in motion pictures – 791.43658
• Although they do do this (only one digit different): International relations on television – 791.45658
• Long tunnel: Mont Blanc Tunnel (France and Italy) – 624.1920944584
• Long number: Hurricane Katrina, 2005 – 551.5520916364090511

The mind boggles why “Electric engineers’ spouses” would be a useful subject term. Still, it only takes one book about them to require the classification…