Bonanza - Season 1 - Eps 8: The Phillip Diedesheimer Story
Adam and Hoss assist a German engineer in developing the concept of "square set timbering" in the mines. Based on fact, and the first episode not to include all four Cartwrights. Hoss refers to the character, Emily, with whom he was in love with in, "The Newcomers".
About Bonanza

Title: Bonanza
First Air Date: 1959-09-12
Last Air Date: 1973-01-16
Status: Ended
Rating: 7.5/10 (from 440 votes)
Language: EN
Seasons: 14
Total Episodes: 431
Network: NBC
Genres: Western, Action & Adventure, Drama, Family
Production Companies: NBC, NBC Studios
Synopsis
The High-Sierra adventures of Ben Cartwright and his sons as they run and defend their ranch while helping the surrounding community.
Cast

Lorne Greene
Ben Cartwright

Michael Landon
Joe Cartwright

David Canary
Candy Canaday

Tim Matheson
Griff King

Mitch Vogel
Jamie Hunter Cartwright