Frost, Robert. The road not taken : a selection of Robert Frost's poems / with an introduction and commentary by Louis Untermeyer ; illustrations by John O'Hara Cosgrave II. - New York : Holt, 1985. - 282 p. : ill. ISBN: 0030271509 (Hard) 0030000734 (pbk.) : $8.95 LCCN: 85008397 Dewey Class. No.: 811