Like the illustration? It’s linked to “A Halloween Thought” by the mysterious “H.M.Y.” Google Books also brings us poems like Charles Frederick White’s “Hallowe’en,” Blanche Elizabeth Wade’s “Jack-O’-Lantern’s Prank,” Stanley Schell’s “The Ghost of a Flower,” Carl J. Segerhammer’s “Halloween Party,” R. Chetwynd-Hayes’ “The Shadmock,” Ina A. Bickford’s “Falling Leaves,” Lulu G. Parker’s “Halloween,” Jack …