 Several of the works intended as part of the sequence were rewritten many times over many years—he worked on "Lunar Caustic", for instance, from the 1930s until his death, first titled "The Last Address", then "Swinging the Maelstrom", and finally "Lunar Caustic".The posthumous publications of his unfinished manuscripts have brought several more parts of "The Voyage That Never Ends" to light, though these vary in completeness and Lowry's final intentions with these works can only be speculated on.The published version of "Lunar Caustic", for instance, was compiled by his widow Margerie Lowry and poet Earle Birney from "two distinctly different manuscripts.