Book  (1936)  Page(s) 162.  
 
Royal Cluster (multiflora) Conard & Jones 1899; Hermosa X Dawson Rose; white with light pink, single, climbing. Sangerhausen

Book  (1933)  Page(s) 212.  
 
Royal Cluster Conard & Jones Co., 1899. Forgotten multiflora with clusters of double, white flowers, tinged pink.

Website/Catalog  (1917)  Page(s) 74.  
 
Climbing Tea and Noisette Roses
These are the Roses which make such a glorious display in the warmer sections of the country, covering porches, pergolas and trellises with their handsome foliage and gorgeous flowers.  Those marked H. will be found hardy even in the coldest climate if given protection during the winter, while those marked M. H. are moderately hardy and especially valuable for open-ground culture south of Philadelphia and in California.
Royal Cluster.  Hardy. — White; spicy fragrance.

Website/Catalog  (1914)  Page(s) 5.  
 
Royal Cluster (multiflora). Vigorous, upright, hardy, floriferous, up to 100 bloom on one truss, whitish pink, passing to white, medium size, double (Hermosa X Dawson)

Magazine  (5 Aug 1911)  Page(s) 374.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Royal Cluster... Multiflora Scandens*, Conard, 1899, Hermosa X The Dawson

*i.e., Climbing Polyantha

Book  (1910)  Page(s) 261.  
 
Royal Cluster [Multiflora]; flowers white, sometimes tinted with blush; very fragrant, and produced in large clusters.

Magazine  (1905)  Page(s) 550.  
 
Royal Cluster (Conrad & Jones Co.) Dawson x Hermosa; double white. Hardy Climbing.

Book  (1904)  Page(s) 116.  
 
...Dawsoniana, De la Grifferaie, Erinnerung an Brod, Erlkönig, Gardeniaeflora, Himmelsauge, Jeanne Ferron, repeat-blooming, Leuchtstern, Max Singer, repeat-blooming, Morgenrot, repeat-blooming, single, Ornement des Bosquets, Prairie Queen everblooming, repeat-blooming, Royal Cluster, Rubin, Thalia remontante, repeat-blooming.

Website/Catalog  (1904)  Page(s) 102.  
 
Royal Cluster  Hyb. Cli. Flowers medium size, double, and beautifully formed, produced in immense clusters; as many as 119 having been counted in one cluster at one time; colour white, sometimes faintly tinged with blush, very fragrant.