From Australian contributor Patricia Routley:
ULRICK’S BUTTERCUP
Pale yellow floribunda.  
 L. W. Ulrick, Queensland, Australia.     1954
Yvonne Rabier (white poly  1910)  x Baby Alberic (creamy white poly  1932)
      
1955.  Australian and New Zealand Rose Annual
p70   New Australian Roses.   Editor.   Ulrick’s Buttercup.  Floribunda.     Pale yellow.
p128   New Rose Registrations.     The following roses have been registered by Dr. A. S. Thomas, Registrar of Rose Names for Australia and New Zealand:   
Registration No. 113  Ulrick’s Buttercup.   Floribunda.     L. W. Ulrick.    Registered  January 26, 1954. 

1955  American Rose Annual
p276    New Roses of the World.   Ulrick’s Buttercup.    Fl.  (L. W. Ulrick  ’53)   Yvonne Rabier x Baby Alberic    Large ovoid bud.   Clustered, medium size, cupped, double, pale yellow flower, strong fragrance.    Abundant, bronze foliage.    Very vigorous bushy 5’ plant.   Profuse bloom. 

 1995   The Rose Breeder   Australian Rose Breeder’s Association newsletter  Vol 4, No. 4.
p18  Australian Roses.     Ulrick’s Buttercup.    Flor.  1954.  L. W. Ulrick.    Yvonne Rabier x Baby Alberic.  

1999.  Peter Cox “Australian Roses” 
            [no mention of any L. W. Ulrick rose]