Book  (Oct 2001)  Page(s) 212.  Includes photo(s).

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.  
Guiding Star, a fine flower of purplish hue, shaded crimson, with a longitudinal band of maroon down the centre of each petal...  2s. 0d

Book  (1906)  Page(s) 53.  
 
Principal garden varieties of Clematis:
Jackmanni type.  (July to October.)
Guiding Star... Purplish, crimson shaded.

Magazine  (1875)  Page(s) 83.  
 
Clematis Guiding Star, CRIPPS AND SON.
Messrs Thomas Cripps, de Tunbridge Wells, nous favorisent de l'envoi d'une branche de la Clematite Guiding Star, qu'ils viennent d'obtenir parmi leurs semis. Les fleurs de la nouvelle venue sont très grandes, d'une riche couleur pensée, rehaussée d'un large ruban central d'un cramoisi très-riche; le Guiding Star est de la gamme des Cl. Star of India.

Magazine  (Sep 1873)  Page(s) 210.  
 
Notable New Plants and Flowers.
Clematis Guiding Star [First-class Certificate]. — In this variety the flowers are reddish-purple, with a  broad flame of rich maroon; it is in the way of, but superior to C. magnifica, and comes also very near to C. Star of India. — Messrs. Cripps & Son: R.H.S., July 16.