• Law Dictionary
• The Annual FBI Uniform Crime Reports
• The Proceedings of the Old Bailey, 1674-1913 (197,745 criminal trials)
• 18th-c. pirate hunting by British Navy captain (FFA thread)
• Forms of government
• The Fanfic Writers' Guide to the US Foster Care System
• Crime and punishment, 18th c. UK/France (FFA thread)
• Crime McGuffins (FFA thread)

Police

• 10 Rules for Writing about Cops
• A Brief Guide to Handcuffs (and how to escape them)
• Guide to Crime Scene Investigation

• ORBIS: The Stanford Geospatial Network Model of the Roman World
• Omnes Viae — A Roman Empire routeplanner
• Rates of Travel, U.S., 19th Century
• Age of Sail resources
• Women in the Age of Sail
• Stagecoach from London to Plymouth in bad weather
• Internet Movie Plane Database
• Internet Movie Car Database
• A Guide to Helicopters in Cinema and Television

Traveling by Horseback

• How far can a horse travel in a day? Are there some guidelines to use when writing fiction?
• Long-haul average speed of horseback travel?
• How fast could they travel?
• How fast can a man travel on horseback, miles per day on flat land and also rough terrain?
• How fast could a person in the 1800s travel BY HORSE per day going through pretty level, easy terrain?
• A modern guide to whether to buy a stallion, gelding, or mare
• Riding horses at night (FFA thread)

• How 5th-6th century climate change affected history
• Twenty Tips on How to Science
• Natural resources (and their consequences) in a small lake country
• What If the Moon Didn't Exist? and What If the Earth had Two Moons?, both by Neil F. Comins
• Deserts are Weird: A Writer's Guide
• Historical Atlantic hurricane data resource, 1852-present
• Hurricane and cyclonic storms: Worldwide historical data
• National Hurricane Center data archive
• How geography affects climate (FFA thread)
• Xenology - An Introduction to the Scientific Study of Extraterrestrial Life, Intelligence, and Civilization. From the 1970s, so somewhat out of date, but still interesting. Author is a nanotechnologist who was involved with SETI and who advocated for space exploration.
• Whether the pupils of theropod dinosaurs would have been slit or round (FFA thread)
• U.S. phones, early 1970s (FFA thread)
• Prepaid burner phones and call tracing (FFA thread)
• Biological pest control (FFA thread)

• Cedarseed's Tutorials
• What Architects Do
• Irish step dancing (FFA thread)
• Dubstep subcultures (FFA thread)

Theatre

• Production 101
• Theatre Spaces glossary
• Shakespeare's Globe On Screen

• Business Dictionary
• Nine Homeworlds discussion (FFA thread)
• Geography Dictionary and Glossary for Students
• How to write one character tracking another