Website/Catalog  (1909)  Page(s) 4.  
 
DOUBLE HERBACEOUS PEONIES. SERIES F. $1.00 each
Bertha, (Terry 1898) bright crimson, full double, large, late, very satisfactory.

Website/Catalog  (1908)  Page(s) 3.  
 
DOUBLE HERBACEOUS PEONIES SERIES C. 50 cents each
Bertha, (Terry) brilliant crimson, very large, full, double and late.

Book  (Apr 1907)  Page(s) 36.  
 
291. BERTHA, P. albiflora (Terry)
(1) 1904, Harrison's Paeony Manual p. 42.
(2) 1905, Terry's Cat.
(3) Cornell Plot No. 129.
 

Book  (1907)  Page(s) 36.  
 
Bertha. Terry, 1898. Bright crimson, large, full double; late. Very satisfactory.
 

Website/Catalog  (1907)  Page(s) 3.  
 
Double Herbaceous Paeonies. Series C. 50 cents each
Bertha, brilliant crimson, very large, full, double, late;