Book  (2000)  Page(s) 609.  Includes photo(s).
 
‘Vanguard’: Moderne - Hybride de Rugosa - rose orangé, remontant… saumon lavées d’abricot et d’orangé.. Stevens, USA, 1932.

Book  (Mar 1995)  Page(s) 151.  
 
Vanguard Stevens (USA) 1932. Hybrid Rugosa. Description... orange-pink, a most unusually colored rugosa... not as hardy as other rugosa hybrids...

Book  (11 Jun 1993)  Page(s) 56.  
 
(R. wichuraiana x R. rugosa 'Alba') x 'Eldorado'. Stevens (USA) 1932. Description... large double blossoms of salmon color overlaid with golden tones... [in Verrier's harsh winter climate] winterkill is excessive... in milder climates this shrub behaves vigorously, much like 'Dr. Eckener', and is said to have fragrant blossoms...

Website/Catalog  (1982)  Page(s) 39.  
 
Vanguard (Hybrid rugosa) A large shrub bearing large semi-double blooms of bronzy salmon.  Fragrant with a chamois leather texture to the petals.  Large glossy foliage.  1932.  W. H. Shade tolerant. (R) 8 x 6’. 

Website/Catalog  (1936)  Page(s) 48.  
 
New Roses 1935.  Vanguard  H. Rug. ( G. A. Stevens 1932) 6.  A new colour in Rugosas.  Orange-salmon and gold which fades to lighter and duller colours.  ....E.

Book  (1936)  Page(s) 723.  
 
Vanguard (hybrid rugosa) Stevens 1932; R. wich. X R. rug. X Eldorado; orange-salmon, edges light pink, base golden, medium to large, double, flat cup form, solitary or up to 5, once-blooming, strong stems, glossy light green foliage, growth 8/10, large bush, hardy. Sangerhausen

Book  (1935)  Page(s) 18.  
 
Harry H. Hazlewood.  The New Roses of 1935.
In one respect, Vanguard (Stevens, 1932) should be placed first and not last on the list. It is a definite effort to infuse the foliage quality of Rosa rugosa into the weak Pernetiana family, and while it has not achieved all the results in one try, it is progress along sound lines. The growth is tall and almost climbing, while the foliage is a joy to behold. The young plants only bloomed in the spring, but future generations should give us better foliage and more vigorous constitution in the Pernetiana colours.

Website/Catalog  (1935)  Page(s) 43.  
 
New Roses 1935.  Vanguard  (H. Rug.  G. A. Stevens 1932) A new colour in Rugosas. Orange-salmon and gold. Vigorous grower, with large, glossy foliage. Splendid as specimen bush, in the border, as a climber on a fence, or for tall hedge. 4/- each.
A very interesting variety for hybridists as it offers possibility of giving back constitution. A cross between Rugosa and Pernetiana.