William "Peek-A-Boo" Pennington was a P.I., cattle man, theater owner, building contractor, oil man, song writer and apartment building owner. Pennington was often used as a P.I. by famous attorneys such as MELVIN BELLI and Jake Erlich.
Here is Pennington standing next to Belli. Found by morf 13:
NAME: William Pennington
AGE: 40
ESTIMATED BIRTH YEAR: abt 1900
GENDER: Male
RACE: White
BIRTHPLACE: Kansas
MARITAL STATUS: Married
RELATION TO HEAD OF HOUSE: Head
HOME IN 1940: Piedmont, Alameda, California
MAP OF HOME IN 1940: View Map
STREET: Ramona
HOUSE NUMBER: 133
FARM: No
INFERRED RESIDENCE IN 1935: Piedmont, Alameda, California
RESIDENCE IN 1935: Same Place
RESIDENT ON FARM IN 1935: No
SHEET NUMBER: 4A
NUMBER OF HOUSEHOLD IN ORDER OF VISITATION: 75
OCCUPATION: Pot Sewestge
HOUSE OWNED OR RENTED: Owned
VALUE OF HOME OR MONTHLY RENTAL IF RENTED: 8500
ATTENDED SCHOOL OR COLLEGE: No
HIGHEST GRADE COMPLETED: College, 4th year
HOURS WORKED WEEK PRIOR TO CENSUS: 40
CLASS OF WORKER: Working on own account
WEEKS WORKED IN 1939: 40
INCOME: Letter
NEIGHBORS: View others on page
HOUSEHOLD MEMBERS:
NAME AGE
William Pennington 40
Beula Pennington 37 (wife)
William N Pennington 17 (son)
Jacquelin J Pennington 8 (daughter)
Alice Joan Pennington 5 (daughter)
W R Hendrickson 24 (brother in law)
^records found by TheForeigner at zodiackillersite.com
Pennington is interesting because of his business card, which may have partially inspired Zodiac's Halloween card: