If I Had Known is a poem that L.M. Montgomery published in the 18 February 1903 issue of Zion’s Herald, a Boston publication. It also appears in A World of Songs: Selected Poems, 1894–1921.
First Line
If I had known how much of lasting good
Bibliography
Montgomery, L.M. “If I Had Known.” Zion’s Herald (Boston), 18 February 1903, 206.
Also in A World of Songs: Selected Poems, 1894–1921, 40.