Hattie A. Peterson Oberg (April 17, 1930 – March 30, 2017) was a pitcher who played in the All-American Girls Professional Baseball League. She played under her maiden name, Hattie Peterson.^[1][2]

A native of Winnebago, Illinois, Hattie was one of nine children born to Walter and Hattie LaTour Peterson, of Scandinavian ancestry.^[2]

She joined the All American League with the Rockford Peaches club, where she spent two seasons from 1948 to 1949.^[2] She was forced to retire after injuring her throwing arm.^[1] Afterwards, she moved with her family to Phoenix, Arizona.^[2]

In the late 1950s, Hattie worked in manufacturing for the Motorola research and development laboratory in Phoenix until her retirement in the 1990s.^[2]

Hattie returned to Rockford, Illinois in 2007, where she lived most of her life. In her spare time, she enjoyed playing the accordion; a hobby that she did not pick up until she was in her 40s. As a result, she was still active in accordion clubs and entertained fellow retirement home residents.^[2]

In addition, she was a diehard Chicago Cubs fan, as she lived to see her loved team win the 2016 World Series.^[2]

In 1988, Hattie A. Peterson Oberg received further recognition when she became part of Women in Baseball, a permanent display based at the Baseball Hall of Fame and Museum in Cooperstown, New York, which was unveiled to honor the entire All-American Girls Professional Baseball League.^[3]

She died in 2017 in Mount Morris, Illinois, at the age of 86.^[1]

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