Though he never published any photographic books, he did contribute to The Sunbeam edited by his friend Philip Henry Delamotte and other books. One book by Llewelyn that was scheduled for publication was "Pictures of Welsh Scenery" to be published by Joseph Cundall of Bond Street, in 1854. In "The Practice of Photography" published in 1853 written by Philip Delamotte (or Philip H De la Motte as the publication states) an advertisement in the back announced: "Now ready, price 16s ... "Series of Photographic Pictures of Welsh Scenery" by J D Llewelyn. Published in parts 10s 6d each." The book appears not to have been published for some unknown reason and there are no references to it in surviving letters either.