Including commercials each episode ran about 50 minutes.
No, Candace Bergen was not on a Bonanza episode.
no
Below is a link to the full cast and crew of the Bonanza episode The infernal Machine.
Imdb has photos for each episode of the series.
no
No, Barbara Eden wasn't on any episode of Bonanza
Blessed Are They, Season 3 Episode 30.
Desperate Passage was the name of the episode
From 1963-84 and from 1986 to 1989 the average length was 25 minutes per episode (with storylines usually taking between 2 and 14 episodes to tell). In 1985 the length became 45 minutes per episode, and this is also the average length of episodes produced since 2005.
Franklin did do one episode of Bonanza, First Love, aired 1972. But she played the wife of a school teacher as an adult.
I could not find his name for that episode.
Episode #232, Season 7, The Fighters, original air date: April 24, 1966.