The Vallejo Times-Herald, from beginning and through mergers, went through 4 different publishers:
1. A.B. Gibson
2. George Roe
3. Robert W. Walker
4. Luther Earl Gibson
The San Francisco Examiner, from beginning, went through 2 different publishers:
1. William Moss
2. George/William Randolph Hearst
The San Francisco Chronicle, since the death of its founder, went through 2 different publishers:
1. George Toland Cameron
2. Charles de Young Theiriot
Note:
In the case of VTH, A.B. Gibson & George Roe, began the paper. This why I have A.B. Gibson listed. A.B. Gibson really didn't last with the paper long. On up to the sale of the paper to, Robert W. Walker, George Roe ran the paper.
In the case of the SF Examiner, the SF Examiner, technically went through three publishers: Moss, George and William R Hearst. George and William R Hearst are father and son. They are immediate family members, from the same blood line and thus, one publisher.
In the case of the SF Chronicle it becomes a bit tricky. The SF Chronicle has always been family owned. It began with Charles & Michael de Young and was ran by Michael de Young until his death in 1925. One of the reasons why the Chronicle stayed family owned for as long as it has was due to an inclusion in Michael de Young's will that essentially stated the paper would only be run by family members until the last of his four daughter's passed away. George Toland Cameron was married to daughter Margaret de Young and ran the paper from the time of the founders death until his death in 1955. Charles de Young Thieriot was the son of another daughter named Kathleen. Charles de Young Theiriot was publisher at time of Zodiac killings.
Given the Zodiac's penchant for writing editors and, newspapers, I see no reason why the Zodiac wouldn't think to include the publishers.
PS.
I had a post in "Ask a member" but deleted it. My question pertained to the editors of the three papers and wondered if anyone knew who they were. If anyone has this answer please reply.
Added:
I believe Scott Newhall was the editor of the Chronicle.
Wyman Riley was editor of Vallejo Times-Herald.
Unable to find editor of San Francisco Examiner beyond Jack Doughty in 1967.
Soze