Now it's 1969 and you are in Long Beach where you have not only visited a classic ocean liner that is permanently docked but also a very large seaplane on static display. You receive a message from friends who are in the Lake Tahoe area on a skiing trip: "Come on up! Conditions are excellent!" Well, why not....and you find there's a direct flight from Long Beach (LGB) to Lake Tahoe (TVL) which makes three stops en route but only operates once a week arriving into TVL just before lunch time which fits your schedule perfectly. And most fortunately, the day you need to travel is the day this flight operates. Name the airline, all three stops and the equipment
Now a once-weekly flight if it was nonstop, I would go for Holiday Airlines with one of their ex-PSA Electras, who did this sort of thing at the time. But three stops ... that is presumably a schedule, and if once a week is probably some different weekend arrangement. Air West are the only carrier I can think of that might serve these places, so lets go for a Fairchild F27, running something like Long Beach-LAX-Fresno-San Francisco-Tahoe.