“Some Favourites Amongst Daffodils I Have Raised,” Guy L. Wilson
“Narcissus viridiflorus,” Hamilton P. Traub; “The Fall Flowering Narcissus,” L.S. Hannibal
“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