Book  (1944)  Page(s) 85.  
 
Mr. S. J. Bisdee.  Roses in Tasmania
Jonkheer Mr. G. Sandberg: Another I tried in my search for good yellows. So far, the colouring is a pleasing soft shade of
yellow, but the plant does not look to have much constitution.

Book  (1941)  Page(s) 46.  
 
 p46.  R. Marion Hatton.  An American Review of the New Roses
Jonkheer Mr. G. Sandberg, from Buisman, is catalogued on the Pacific Coast as clear bright yellow flowers of fine form and a free-blooming plant. I have not seen it, but want to.

p112. Mr. Frank Mason.  New Zealand Notes.
Jonk. Mr. G. Sandberg is a beautiful yellow of good growth, and everyone who had seen it has admired it immensely. It will be a Rose worthwhile for any purpose.

Book  (1938)  Page(s) 15.  
 
Harry H. Hazlewood.  The New Roses of 1938. 
Jonkheer Mr. G. Sandberg HT. (Buisman, 1936)  This is a bloom of medium size, good shape and rich colour, with 25 petals. Growth is good and healthy.

Website/Catalog  (1938)  Page(s) 24.  
 
Bush Roses
Jhr. Mr. G. Sandberg (Hybrid Tea)... Indian yellow with chromatic yellow, moderately large full pointed flower. Foliage dark glossy green, disease resisting. Strong upright growth, free and perpetual flowering. A very fine novelty of striking colour and good healthy growth. Highly perfumed. Introduced 1937.

Website/Catalog  (1938)  Page(s) 38.  
 
New Roses 1938. Jhr. Mr. G. Sandberg  (HT.  G. Buisman 1936) Full pointed moderately large flower of indian yellow with chromatic yellow, sweetly scented.  Dark, glossy green, disease resisting foliage, and strong, upright growth. A striking colour and good, healthy growth, the long stems making it excellent for cutting. 5/- each.
25-30 petals and promising for a splendid variety.