Here are some links to places I use for information and supplies. Be sure to let me know of any you especially recommend in the Comments below (or send them to me through the Contact Form).
Travel and Health Links for Home or On the Road
ASPCA Poison Control Center: What to do if you think your cat has ingested a poisonous substance. The site also has a 24/7 Emergency Hotline is (888) 426-4435 — Note: There may be a US$65.00 consultation fee charged to your credit card.Before an emergency, however, you should check out their recommendations and advice.
American Veterinary Medical Association : AMVA Pet Travel FAQs. Find authoritative answers to your pet care travel questions, though many are more dog-related.
The Humane Society of the United States: The Humane Society Travel Tips (And consider a donation. They are the “Red Cross” for animals in natural disasters or emergencies.)
National Geographic’s Guide to Quirky International Rules: Some basic information on international travel with cats, dogs — and more exotic creatures. (If nothing else, you will find out some really odd things people think would make good pets.)
Cornell University College of Veterinary Medicine | Feline Health Center: Good, solid information on cat health and care from the finest veterinary school in the United States (if not the world).
Managing Long Drives and Fatigue Based on Scientific Evidence: a 3-page, well-annotated PDF on tips to avoid driving fatigue and arrive alive
Simon’s Cat : Good for a laugh & useful information in a funny format
Cat Supply Sources & Recommendations (*Affiliate Links)