A student at McGill in the mid-1950s, Marian Engel wrote her M.A. thesis under the direction of Hugh MacLennan. Their work together became the basis of a correspondence, the MacLennan half of which survives and is detailed here. Both personal and professional in nature, MacLennan's letters to Engel provide fascinating insights into his life's pursuit of writing and offer another glimpse of the author of Two Solitudes.