Extract from the 1930 Census:
Name: Barbara P Spicer
Age: 7
Estimated birth year: 1923
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: daughter
Home in 1930: Duluth, Saint Louis, Minnesota
Address: 1631 East Fifth Street
Marital status: single
Father's birthplace: Iowa
Mother's birthplace: Minnesota
Occupation: attending school
Siblings living at home: Frank W (age 12), Richard G (9), and Elinor M (8)
Census place: Duluth, Saint Louis, Minnesota; Roll: 1126; Page: ; Enumeration District: 47; Image: 358.0
Date: 3 Apr 1930

Extract from the 1940 Census:
Name: Barbara P Spicer
Age: 17
Estimated birth year: 1923
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: daughter
Home in 1940: Duluth, Saint Louis, Minnesota
Address: 202 Hawthorne Road
Marital status: single
Highest grade of school completed: high school 3 years
Living on farm: no
Place of residence in 1935: same house
Occupation: attending school
Siblings living at home: Frank W (age 22), Richard G (19), and Elinor M (18)
Census place: Duluth, Saint Louis, Minnesota; Roll: T627_1972; Page: 6B; Enumeration District: 88-22
Date: 12 Apr 1940

Extract from the 1950 Census:
Name: Barbara S MacGregor
Age: 27
Estimated birth year: 1923
Birthplace: Minnesota
Race: white
Sex: female
Relation to head-of-house: wife
Home in 1950: Plymouth, Hennepin, Minnesota
Address: on private road
Marital status: married
Living on farm: no
Occupation: keeping house
Census place: Plymouth, Hennepin, Minnesota
Date: 8 Apr 1950

Obituary from the "Star Tribune" of Minneapolis, Minnesota dated 28 Jun 2008:
Barbara MacGregor knew how to throw a party in D.C.
Former U.S. Rep. Clark MacGregor's wife "took a mischievous delight in bringing political friends and foes together," one daughter said.
by Ben Cohen
A daughter of Duluth, Barbara MacGregor played cheerful host to presidents and the political elite, bringing Midwestern informality to her famous Washington parties.
MacGregor, whose husband Clark MacGregor was a Republican member of the House of Representatives and an aide to President Richard Nixon, died of respiratory failure on June 19 in Washington.
She was 85.
She and her husband were personal friends of President Gerald Ford and the First Lady, Betty. She played bridge with the likes of former Supreme Court Justices William Rehnquist and Sandra Day O'Connor.
Former Secretary of State, Henry Kissinger and Katherine Graham, the former Washington Post publisher, often gathered in the basement family room of their home, the preferred venue for her parties.
"She took a mischievous delight in bringing political friends and foes together," said her daughter, Laurie MacGregor of Hanover, N.H.
After her mother had once seated Graham between two political foes, the publisher said that she never had so much fun with her enemies, Laurie MacGregor reported.
The Fords and the MacGregors were fast friends, attending events and traveling together. After Ford became president, he could relax at their home.
On one occasion, sensing that he was tired, she asked, "Don't you think you could go home now?"
Born Barbara Spicer, she attended the College of St. Scholastica in Duluth and at 19 moved to New York to attend a fashion school. She worked at Macy's and as a buyer at B. Altman's in New York and the former Dayton's Department Store in Minneapolis.
As a congressman's wife, she moderated fund-raising fashion shows and was active in the Junior League and children's charities in Minnesota, said her daughter.
A member of the Congressional Wives Club in Washington since 1961, she led several fund-raising balls in the 1970s.
She moved to Washington with her family in 1961, after her husband, a lawyer in Minneapolis, won his congressional seat.
He ran for the U.S. Senate in 1970, losing to Hubert H. Humphrey, and then became counsel to the president for congressional relations.
McGregor later replaced former Attorney General John Mitchell as head of the Committee to Re-Elect the President during Nixon's 1972 reelection campaign and was called to testify at the Watergate hearings.
MacGregor joined United Technologies in Washington in 1973 and died in 2003.
In retirement, Barbara MacGregor enjoyed playing classical and jazz piano, and bridge.
Her daughter said she "wasn't exactly tactful," but she was a practical, informal hostess.
"My mother often said, 'Well, what do you expect. I'm from Duluth," as if that explained a lot, and it did," said her daughter. "Everyone wanted to be invited to Barbara MacGregor's parties."
In addition to Laurie, she is survived by her other daughters, Susan MacGregor Wheelwright of Boston and Eleanor MacGregor of Kensington, Md., and eight grandchildren.
Services were held in Washington.

Obituary from the "Post" of Washington, DC:
Barbara Spicer MacGregor
On June 19, 2008, of Washington, DC. Wife of the late Honorable Clark MacGregor. She is survived by three daughters, Susan MacGregor Wheelwright (Joseph), Laurie MacGregor (Kurt Feuer) and Eleanor MacGregor (Hoyt Connell) and eight grandchildren. A memorial service will be held on Tuesday, June 24 at 2 p.m. at Joseph Gawlers Sons, 5130 Wisconsin Ave., NW, Washington, DC. Interment private. In lieu of flowers, memorial contributions may be made in her name to the charity of choice.