Whitman sent Knortz H. H. Gilchrist's Anne Gilchrist: Her
Life and Writings (New York, 1887) and later was annoyed that
Knortz had not returned it, complaining to Horace Traubel to that
effect on September 6, 1888. Whitman had eight or ten photographs
taken by George C. Cox, but only one, which Whitman called "the
laughing philosopher," was satisfactory to him. Cox sold these
photographs to the general public, and, according to Whitman, was
the only photographer who had the courtesy to pay him royalties.
Whitman apparently never had the opportunity of meeting Knortz, for
more than a year later, on September 3, 1888, he told Traubel that
his curiosity to meet him was still great.