The couple married just three weeks later, once the ship disembarked in Australia. The wedding took place in Sydney, Australia, in 1942. However, they did not live together until the end of World War II. They moved to San Francisco, Caspar Weinberger's hometown, after the war.
Jane Weinberger first began writing and publishing during Reagan's first term, while her husband, Caspar Weinberger, was Defense Secretary. Her foray into publishing began as the result of one of the Reagan administration's budget cuts. President Reagan had eliminated funding for the Future Scientists Fund, which would team students with scientists at the Jackson Laboratory in Bar Harbor, Maine, for the summer. Weinberger was a key supporter of the program. Weinberger authored a children's book, Vim, about a lab mouse, in order to raise money for the Future Scientists Fund. She donated all proceeds from the sales of Vim to the FSF. She collaborated with her husband on another children's book, Kiltie, about the Weinbergers' family dog, Kiltie. Jane wrote the story, while Caspar took the photographs which appear in the book. Caspar also helped to pack, sell and deliver some of his wife's books during the Reagan years. Jane Weinberger acknowledged her husband's contributions in the author's notes for a 1986 book about charitable fundraising, Please Buy My Violets. Jane Weinberger founded the publishing company Windswept House Publishers in 1984. The publishing house was named for the Weinberger family home located in Somesville, Maine on Mount Desert Island. Weinberger ran the company from her home. Windswept House initially published children's books written by Weinberger, but she expanded its catalogue to include children's publications written by other authors, as well as books for adults. The company has published over 120 books, many aimed at young people, since its creation. In 1991, Weinberger released As Ever: A Selection of Letters from the Voluminous Correspondence of Jane Weinberger, 1970-1990, a compilation of letters which she had written to her friends and family. The letters offered an insight into Weinberger's views of top political figures. She called Nancy Reagan "irritable and snappish", referred to former Soviet ambassador to the U.S. Anatoly Dobrynin as "a wily old bastard but amusing" and stated that former vice president Spiro Agnew "makes me sick". Weinberger was also involved in a number of other charitable causes. She served as the chairwoman of the Folger Shakespeare Library in Washington D.C. from 1981 to 1986. Weinberger held seats on the boards of directors of both Amherst College and the Jackson Laboratory in Bar Harbor, Maine. Weinberger and her husband co-founded a scholarship for students at Mount Desert Island High School pursuing careers in vocational programs. She authored her last book, Experience the Journey, in 2003. Caspar Weinberger died in 2006, aged 88.
Later life
Jane Weinberger had been in poor health before suffering a stroke in July 2009. She died at a nursing care facility in Bar Harbor, Maine, on July 12, 2009, aged 91. Her ashes were scattered in the gardens of her home in Somesville, Maine. She was survived by her two children, daughter Arlin Weinberger, and son, Caspar Weinberger, Jr.; three grandchildren, five great-grandchildren, and a sister.