Originally Posted by JoeDTW

After a hiatus from this forum, in part to log XWA and "check off" Fort Union Trading Post National Historic Site and Knife River Indian Villages National Historic Site, I'm back.1. (1975) Ah… the big day is finally here! You’re off to the Bahamas for a week of sun and fun on the beaches up the coast from Nassau. From your home in Milwaukee, you’ll fly on two nonstop flights, each operated with DC-9-30s, with each operated by a different airline. Thankfully you’ll not be connecting through Chicago O’Hare. In perusing all the different nonstops to Nassau from the U.S. mainland, I’ve been able to find only one routing that meets the above specified parameters. Identify the two airlines and the connection point
I'll guess North Central MKE-DTW, connecting to Air Jamaica DTW-NAS, with DC-9-30s on both flights.

Correct!

North Central NC 990 Milwaukee (MKE) 600a - 745a Detroit (DTW) DC-9-30 X7 Breakfast
Air Jamaica JM 060 Detroit (DTW) 915a-1215p Nassau (NAS) DC-9-30 Daily Lunch

16. (1978) You’re an administrator at the Mayo Clinic in Rochester, Minnesota and next week you’ll be flying down to a medical conference being held in Scottsdale, AZ. Your travel agent has found you a convenient itinerary involving two nonstop flights with a single connection. Two airlines are involved, with both airlines operating the same type and variant of aircraft. You’ll even be served a lunch enroute. Identify the two airlines, the routing and the single aircraft type.

I believe that just before deregulation, RW was awarded PHX-DSM-MKE. I'll guess an OZ DC-9-30 to DSM, connecting to a RW DC-9-30 DSM-PHX.

Correct again!

Ozark OZ 527 Rochester (RST) 742a-819a Des Moines (DSM) DC-9-30 Daily
Hughes Airwest RW 260 Des Moines (DSM) 950a-1130a L Phoenix (PHX) DC-9-30 Daily