American Plant Life Society, Herbertia, Vol. 9, No. 1, 1953

“Some Favourites Amongst Daffodils I Have Raised,” Guy L. Wilson

“Daffodils: The Pinks, Miniatures, Naturalizing, Decoratives, and a Comprehensive Beginners’ List,” Carey E. Quinn

“Narcissus viridiflorus,” Hamilton P. Traub; “The Fall Flowering Narcissus,” L.S. Hannibal

“Thirty Years Breeding Daffodils,” Edwin C. Powell; “Narcissus Breeding Report,” W. R. Ballard; “Breeding Narcissus for Various Climatic Regions,” J.S. Cooley

“Daffodils in Piedmont Virginia,” Harry I. Tuggle

“Old Naturalized Narcissus in The South,” Jo N. Evans

“Daffodils in 1952,” Grant E. Mitsch

“Daffodils in Northern California,” Harold I. Johnson