Book  (1942)  Page(s) 54.  
 
Dr. J. A. Gamble, Washington, D.C. Better Roses for All Regions of North America.
M. H. Horvath, of Mentor, Ohio, was the first one to really begin the exploration of the American species for the production of roses hardy and suitable for the different sections of North America....
'Doubloons', 'Captain Kidd', 'Jean Lafitte' and 'Long John Silver', the "Treasure Island" climbers, came from Mr. Horvath's crosses of R. setigera with 'Austrian Copper' (a remote parent of 'Souv. de Claudius Pernet), 'Hoosier Beauty', 'Willowmere' and 'Sunburst' respectively.....

Book  (1939)  Page(s) 169.  
 
Herr Kordes. The New Rose Situation in Germany.
'Jean Lafitte' and 'Long John Silver' are very fine, but 'Captain Kidd' does not like the moist air with us; it will mildew.

Book  (1938)  Page(s) 167.  
 
Herr Kordes. Germany Discusses Roses.
'Long John Silver' is much admired here, especially because it has such growing power and fine big blooms.

Magazine  (May 1937)  Page(s) 39.  
 
Roseraie Internationale d'Essai de l'Ecole de Cibeins. Plantation de 1936. 
Nous avons reçu cette année pour notre Roseraie d'Essai, 30 variétés de rosiers nains et 9 variétés de rosiers sarmenteux, se répartissant ainsi : ...
Envoi de MM. Jackson & Perkins, Newark, New-York (Etats-Unis)
3 Long John Silver. Hybride de Setigera Grimpant non remontant.
 

Book  (1937)  Page(s) 143.  
 
Of Treasure Island naming is 'Long John Silver', H Set. (Horvath, 1934); to be int. J. & P. Co.). It comes into commerce as a Setigera a hybrid made by M. H. Horvath with the definite intention of providing endurance to twenty degrees below zero. Its silvery white blooms are large and in clusters. The plant has vast vigor.

Book  (1936)  Page(s) 373.  
 
John Silver, Long (hybrid setigera) Horvath 1934; setigera seedling X Sunburst; shimmering silvery white, very large, double, cup form, lasting, cluster-flowered, once-blooming, growth 7/10, climbing, 5 m, hardy. Sangerhausen

Book  (1934)  
 
p219 Registration information from originator or introducer: Bud very large, long-pointed, white at tip, cream at base, flower unusually large, double, open, cupped, fragrant, glistening silvery white, in clusters, foliage large, leathery, very vigorous, very hardy.

p229 Roses registered or applications received since publication of 1933 Annual.
'Long John Silver' HS. M. H. Horvath; Jackson & Perkins Co.