Book  (Oct 2001)  Page(s) 229-230.  Includes photo(s).

Website/Catalog  (1924)  Page(s) 107.  
 
Jackmani rubra. Beau rouge foncé velouté.

Website/Catalog  (1919)  Page(s) 67.  
 
Clematis Jackmanni-Hybrids....Jackmanni rubra, red... 10 pieces M 35.-, 100 pieces M 300.-

Website/Catalog  (1912)  Page(s) 78.  
 
Summer and Autumn Clematis.
In bloom from July to October.
These flower upon the wood of the current year's growth, and should therefore be pruned to five or six eyes.  
Jackmanii Rubra, quite distinct; a beautiful red form of the well known Jackmanii...  2s. 0d

Website/Catalog  (1907)  Page(s) 65.  
 
Clematis in pots to plant out in spring and summer.
New Varieties.
34a Red Jackmanii, rich crimson.

Book  (1906)  Page(s) 53.  
 
Principal garden varieties of Clematis:
Jackmanni type.  (July to October.)
Jackmanni rubra... Red.

Website/Catalog  (1906)  Page(s) 3, 68.  
 
Clematis Jackmanni rubra. The floriferous "Jackmanni" in red colour! It has all the good characteristics of the old, proven sort, while the bloom colour of this valuable novelty is bright velvety purple-red. 1 piece Mk. 2.-, 10 pieces Mk. 18.-

Magazine  (3 Oct 1903)  Page(s) 469.  
 
Officiëele mededeelingen.
Bloemen- en Planten-Commissie.
5. Clematis Jackmanni rubra (syn. Cl. Gloire de l'Exposition 1900) als nieuwe plant ingezonden door den heeren Wentink & Co. te Boskoop.