Yes, it is a typo.
Name: Richard F. Winkler
SSN: *advertiser censored*-xx-xxxx
Last Residence: 92363 Needles, San Bernardino, California, United States of America
Born: 19 Jun 1920
Died: 23 Mar 1996
State (Year) SSN issued: Montana (Before 1951)
1930 Census--A bunch of lodgers live with his family...
Name: Richard F Winkler
Gender: Male
Birth Year: abt 1920
Birthplace: Wisconsin
Race: White
Home in 1930: Watertown, Jefferson, Wisconsin
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Marital Status: Single
Relation to Head of House: Son
Father's Name: Richard C Winkler
Father's Birthplace: Germany
Mother's Name: Ella Winkler
Mother's Birthplace: Wisconsin
Occupation:
Education:
Military Service:
Rent/home value:
Age at first marriage:
Parents' birthplace:
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Neighbors: View others on page
Household Members:
Name Age
Richard C Winkler 48
Ella Winkler 44
Richard F Winkler 10
Anna L Baner 40
Peter Steins 50
Joseph Steins 44
Louis Kluberg 47
Henry Bassinger 99
George F Shinnick 52
Possible 1940 Census--Birth year is wrong but middle initial and place of birth match. If correct then he was in Washington State Penitentiary.
Name: Richard F Winkler
Age: 18
Estimated Birth Year: abt 1922
Gender: Male
Race: White
Birthplace: Wisconsin
Marital Status: Single
Home in 1940: Park Place, Snohomish, Washington
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Street: Stevens Pass High Way
Inferred Residence in 1935: Watertoen, Dodge, Wisconsin
Residence in 1935: Watertoen, Dodge, Wisconsin
Sheet Number: 7A
Institution: Washington State Penitentiary
Neighbors: View others on page
Household Members:
Name Age
Richard F Winkler 18
**Mother's maiden name is Barnes or Barner**