Book  (Oct 2001)  Page(s) 287-288.  Includes photo(s).

Book  (1999)  Page(s) 237.  
 
...early summer...light to lavender blue and paler along the midribs; a network of veins stand out in a darker shade.

Book  (1999)  Page(s) 131.  
 
Clematis 'Mrs. Cholmondeley', cv. (Great Britain), 1952

Magazine  (28 Jul 1937)  Page(s) 56.  
 
TWENTY BEST LARGE-FLOWERED HYBRIDS OBTAINABLE IN THIS COUNTRY
Mrs. Cholmondeley, light blue, Jackmani Type
All bloom on new wood except Belle of Woking and Sir Garnet Wolseley

Book  (1906)  Page(s) 53.  
 
Principal garden varieties of Clematis:
Jackmanni type.  (July to October.)
Mrs. Cholmondeley... Light blue.

Magazine  (Aug 1873)  Page(s) 186.  
 
Notable New Plants and Flowers.
Clematis Mrs. Cholmondeley [First-class Certificate]. — Delicate mauve; flowers large and fine, in the way of Duke of Richmond. — Mr. C. Noble: R.H.S., May 21.