Book  (Feb 2009)  Page(s) 230.  
 
‘Parkdirektor Riggers’: Kordesii. Parents: Rosa kordesii x ‘Our Princess’. Obtenteur: Kordes 1957… Ils sont si faciles à cultiver qu’on peut les recommender aux jardiniers un peu négligents. Description et conseils.

Book  (1997)  Page(s) 210.  Includes photo(s).
 
Parkdirektor Riggers Kordesii. Kordes 1957. Description... large clusters of deep red to crimson, almost single flowers...

Book  (1996)  Page(s) 62.  
 
Parkdirektor Riggers Climber. Description... semi-double bright deep red cupped flowers, 2.5 in (6 cm) across, with waved petals...

Book  (1996)  Page(s) 73.  Includes photo(s).
 
Parkdirektor Riggers Climber... this is a popular rose for its bright, deep-red, stiff-petalled flowers, borne in trusses of as many as fifty blooms. Other assets are its hardiness, vigour and ability to give a colourful display through summer and autumn...

Book  (Jul 1993)  Page(s) 95.  
 
Parkdirektor Riggers Description... large clusters of semi-double flowers of deep velvety crimson...

Book  (Apr 1993)  Page(s) 432.  
 
Parkdirektor Riggers® Kordesii (Shrub), dark red, 1957, R. kordesii x 'Our Princess'; Kordes, R. Description.

Book  (Feb 1993)  Page(s) 163.  Includes photo(s).
 
Parkdirektor Riggers Cluster-flowered climber. Parentage: R. kordesii x 'Our Princess'. Germany 1957. Description and cultivation... large, almost single, velvety deep red flowers in clusters...

Book  (1993)  Page(s) 312.  Includes photo(s).
 
'Parkdirektor Riggers'. Cluster-flowered Climber. The name of the worthy Herr Riggers has not inspired English-speaking gardeners to rush to buy his rose, and you do not often see it outside Germany. But there it is regarded as one of the best of the repeat-flowering climbers, vigorous enough for a pergola, and constantly displaying clusters of brilliant red, clustered flowers. The foliage is healthy, but the rose has only slight fragrance. it was introduced in 1957 by Wilhelm Kordes. Rosa kordesii x 'Our Princess'. Repeat flowering.

Book  (1993)  Page(s) 132.  Includes photo(s).
 
A Kordesii Climber. Kordes (Germany) 1957. (Rosa kordesii x 'Our Princess') Repeats. Height: 13 ft. Slight scent.

Book  (1988)  Page(s) 115.  Includes photo(s).
 
Parkdirektor Riggers Climber. Kordes 1957. R. kordesii x 'Our Princess'.