Hi Bear Lake.... I'm also trying to find out more about my Loertscher family. Did you end up finding anything since this post?
I've found that my G-G-Grandfather, Christian Loertscher was born in Spiez, Switzerland in 1845. But I have been unable to find his immigration, which I think would help solidify this.
I will be traveling to that area of Switzerland this summer and would love to really know if this is in fact where my family was from.
Does any of that sound familiar to you?
Best -- Brooke