Magazine  (1 Jul 1886)  Page(s) 108.  
 
Rosa spinosissima ou Rosier Pimprenelle
Choix des mailleures variétés.
William the Fourth, blanc pur.

Book  (1849)  Page(s) 32, supplement.  
 
Descriptive List of Roses.
List of roses that bloom only once in the season.
Scotch Roses.
1864 William IV... Pure white, large flower, luxuriant habit.

Book  (1848)  Page(s) 19.  
 
The Scotch Rose.
76. William the IV; flowers white, large.

Book  (1847)  Page(s) 271.  
 
SCOTCH ROSES.
William the Fourth is an excellent variety, of luxuriant growth. Its flowers are pure white, and among the largest of the class.

Website/Catalog  (1845)  Page(s) 63.  
 
Scotch Roses. Price — 37½ cents.
622. William Fourth... White color.

Book  (1838)  Page(s) 418.  
 
Early Summer Roses. White.
Scotch Roses. — (Rosa spinosissima.)
William IV, double.

Book  (1838)  Page(s) 410.  
 
Although the present work pretends to treat only of rose culture as practised by the French, it would be unjust to pass over wholly without notice the remarkable varieties obtained in our own country. A list of the finest roses, of unquestionable English origin, is therefore subjoined; which the lapse of a few years will probably enable us to double in extent.
Rosa Spinosissima.
Scotch Roses.
William IV

Book  (1837)  Page(s) 36.  
 
The Scotch Rose. (Rosa spinosissima.)
The following varieties have generally proved good and distinct.
William the Fourth is the largest white, pure Scotch rose known; a luxuriant grower, and a good variety.

Website/Catalog  (1837)  Page(s) 9.  
 
Roses for the Summer Rose Garden, that bloom only in May, June, July.
Scotch Roses (Rosa spinosissima).
William IV, white colour; large and very double.