I don't think they were necessarily unknown or unpopular, it's just that Koelsch & Dr. B were there first and had a head start on anyone else. Of course they stayed in first place because they were darn good!
Both Dr. Reed Cutler and Dr. B were excellent. My family went to both. The Cutlers moved into the house behind us in the 60's. Their children were Brad and Vicki. The family grew to include Wayne, Eric, and Jennifer. They all attended Mtn.Home schools. Maybe you remember them. My mom worked for Dr. Cutler as an assistant for a few years in the 70's.
We moved the spring of 1967 but it's good to know someone knew our dentist. :-) My first pair of glasses were in 4th grade. I recall the ride home and being in awe at all the signs I could suddenly read. Sheesh, I was practically blind!
I think my optomotrist was somebody named, ummmm, something like Dr. Bartholamew? Am I close? It's been awhile.
The name of the eye doctor was Borgelthaus (spelling is wrong) The Cutlers and Borgelthaus were good friends.
Bingo! Borgelthaus it was. He prescribed my very first pair of glasses just before my 4th-grade year, 1966-67. Thanks so much.