Thanks so much for these photos!
I grew up going to Disneyland every couple of years but have been primarily visiting WDW since moving to the east coast 15 years ago. Last week was my first vist to Disneyland since 1998 and the first with my children. We rode the Matterhorn several times and I tried to describe the way it used to be, but my faded memories were based solely on a single ride I took in 1975. The next time we visited Disneyland was in 1978 when the new Abominable Snowman was on billboards all over Southern California.
I had hoped that the Disneyland souvenir book with it's "Then and Now" photos might include some pictures of the Matterhorn interior pre-1978, but no luck. However, it does have several excellent photos of Snow Mountain including one with the incredibly ugly central pylon of the Skyway which the Matterhorn so graciously hid from our view.
Keep it up!