He then served churches in Southwark, Pennsylvania; Boston, Massachusetts; and Newport, Rhode Island.
He published 39 books and numerous articles, including The Short Story of Jesus (1943) and Kierkegaard (1938).
A Complete Bibliography of Walter Lowrie was compiled by Donald M. Fox, and published in 1979.
From his retirement in 1930 until his death, Lowrie studied and translated the works of Søren Kierkegaard, the Danish nineteenth-century theologian.
Walter Lowrie was awarded the Knight Cross of the Order of Dannebrog on July 25, 1947 with the following motivation: "As an appreciation of his extensive efforts to spread the knowledge of the intellectual production of Søren Kierkegaard in the Anglo-Saxon world and, thereby, promoting the general understanding of Danish spiritual life.