 Most of his images are considered to be very well composed from both a technical and artistic perspective.Captain Ludlow was pleased by Illingworth's work, but after the conclusion of the expedition Illingworth did not provide Ludlow with six sets of plates as promised, instead providing one partial set.In his preliminary report on the expedition published in the 14 September 1874 issue of the "New York Tribune", Ludlow wrote, ""the photographer secured negatives for about sixty views, a set of which will accompany the report.""