Originally Posted by jrl767

13. (1975) From your home in hot and sunny Laredo, Texas you’ll be flying up to comparatively cool and rainy Portland, Oregon. You’ve found a nice two flight combination with a single connection point utilizing two airlines - each operating the same aircraft type. Each flight makes three stops. Identify each airline, the aircraft type, the connection point and three intermediate stops made by each flight

Well, the routing for the TI flight becomes obvious as the third stop was Albuquerque/ABQ and the connection point was Los Angeles. So as for RW, there are numerous possibilities for LAX-XXX-YYY-ZZZ-PDX; let's start with San Jose/SJC, Sacramento/SMF, and Klamath Falls/LMT

You're spot on re. TI to LAX via ABQ. As for the RW routing, you're right - there are a veritable cornucopia of routing possibilities. Alas, none of the most reasonable and plausible airports which you've submitted work for the flight in question (though they certainly may have worked for a different flight, in another time). On a positive note, you can now cancel those cities off your list of possibilities. And - as an added bonus, I'll throw in a hint: The first flight was not very long...