Beginning in the 1920s, Whitman became increasingly respected by critics, and by 1950 he was one of the most prominent American authors. Poetry anthologies began to include poetry that was considered more "authentic" to Whitman's poetic style, and, as a result, "My Captain" became less popular. In an analysis of poetry anthologies, Joseph Csicsila found that, although "My Captain" had been Whitman's most frequently published poem, shortly after the end of World War II it "all but disappeared" from American anthologies, and had "virtually disappeared" after 1966. William E. Barton wrote in Abraham Lincoln and Walt Whitman, published in 1965, that the poem was "the least like Whitman of anything Whitman ever wrote; yet it is his highest literary monument".