Donald Wayne Foster raised arguments challenging whether the person traditionally identified as the author of a text was correct. He has pointed to an obscure Beat writer, Tom Hawkins, as the author of the Wanda Tinasky letters, which some had previously speculated to be the work of Thomas Pynchon. Foster also joined a long-running effort by descendants of Henry Livingston Jr. to show that their ancestor, and not Clement Clarke Moore, wrote the famous poem "A Visit from St. Nicholas". Foster provided his account of sleuthing out these and other identifications in his book "Author Unknown" (including the Shakespeare-"Elegy" connection, which he still
A Visit from St. Nicholas primarily using an anapaestic metrical scheme, and it is claimed that some of the phraseology of "A Visit" is consistent with other poems by Livingston, and that Livingston's poetry is more optimistic than Moore's poetry published in his own name. But Stephen Nissenbaum argues in his "Battle for Christmas" that the poem could have been a social satire of the Victorianization of Christmas. Furthermore, Kaller claims that Foster cherry-picked only the poems that fit his thesis and that many of Moore's unpublished works have a tenor, phraseology, and meter similar to "A Visit". Moore had even written a letter titled