1943	Born Marcia Schonfeld, April 17, in Queens, New York.
1948	Entered elementary school: Public School 164, Queens, New York.
1951	Maternal grandmother, Grandma Shapiro died of breast cancer.
1956	Graduated Parsons Junior High School, Queens, New York.
1959	Graduated Forest Hills High School, Queens, New York.
1963	Graduated City College of New York, majored in English and art.
1964-65	Studied at the Art Students' League in New York City.
1966-67	Active in the civil rights movement both in New York and in the South. Worked as a writer and editor for Science Magazine.
1967	Mother died in June of breast cancer. Traveled to Mexico with her father and with her brother and his wife; in December she met Brian Grison, a Canadian artist.
1968	Early in the year, she travelled to South America. She returned to the United States after the assassination of Robert Kennedy, fearing that a revolution might occur.
1970-72	Lived in Toronto and New York City and developed friends among artists in both cities.
1974	Moved to a farm in Peterborough, Ontario with artist friend Yvonne Lammerich.
1975	Became active in Sikh Ashram "3HO" in Toronto.
1976-78	Moved to the Ashram and officially became a member of the Sikh community. Studied the philosophy of Kundalini Yoga.
1979-80	Married and divorced a French Canadian member of the Ashram.
1982	Introduced to May Cutler, publisher and president of Tundra Books.
1983	Published Baabee Series #1 (four books), Tundra.
1984	Published Baabee Series #2 (four books), Tundra, a Choice Book from the Children's Book Center.
1985	Published Baabee Series #3 (four books), Tundra, a Choice Book from the Children's Book Center for Merry Christmas Baabee.
1985	Father committed suicide.
1986	Published Tales of a Gambling Grandma, Clarkson N. Potter and Tundra, a New York Times Notable Children's Book and the New York Public Library's Best Children's Book. At about this time she was first diagnosed with breast cancer. (Published in England as Tales of a Gambling Grannie, MacDonald, 1988.)
1987	Published I Want a Dog, an A.L.A. Notable Book, Clarkson N. Potter and Tundra. American Institute of Graphic Arts Show Winner's List.
1987	Awarded Children's Literature Prize Honorable Mention from the Canada Council. Ruth Schwartz Award Finalist from the Ontario Arts Council. Amelia Frances Howard-Gibbon Award Finalist.
1988	American Booksellers Association/Children's Book Council Children's Best Seller List, Choice Book from the Canadian Children's Book Center (1988-89), and New York Public Library's Best Children's Books, all for I Want a Dog.
1988	Published Sleepers, Clarkson N. Potter and Tundra. Governor General's Literary Award for Children's Illustration Finalist, and Parents' Choice Award for Book Illustration from Parents' Choice Foundation.
1988	Published My Family Vacation, Clarkson N. Potter and Tundra.
1989	Moved to Vancouver, British Columbia to live in an Ashram.
1989	Published How Pizza Came to Queens, Clarkson N. Potter. Published in Canada as How Pizza Came to Our Town, Tundra.
1989	Died July 17, in Vancouver, B.C., at the home of Hari and Ram Kirn Khalsa.
1989	Posthumous publication of Julian, Clarkson N. Potter and Tundra.
1990	Posthumous publication of Cowboy Dreams, Clarkson N. Potter and Tundra.
1992	Posthumous publication of Snow Cat, Clarkson N. Potter and Tundra.
1998	Snow Cat video distributed by the National Film Board of Canada.