Book  (Jan 2000)  Page(s) 234.  
 
Alhambra Hybrid Tree Peony. Saunders 1948. A semi-double gold hybrid

Magazine  (Sep 1977)  Page(s) 19.  
 
"Botanical Descriptions of 40 Saunders Lutea Hybrids" by Dr. David Reath and Silvia Saunders
...These descriptions aim to provide the nurseryman and the average gardener with a means of determining the differences between the hybrids, many of which are very similar indeed...
Alhambra—Three or more rows of clear yellow ruffled petals, open wide. Flares small. Filaments same color. Stigmas cream. Sheath cream. The plant is an upright grower.

Article (magazine)  (Jan 1955)  Page(s) 25.  
 
Varieties Raised in America. All by Professor Saunders...
The "Golden Hind Group." Yellow, clear or almost clear , generally semi- or fully double...
'Alhambra,' (1948)

Article (magazine)  (Jan 1955)  Page(s) 56.  
 
Alphabetical Check List of Tree Peony Names In  Public Collections And/or Available in Nurseries 1954-1955
Lutea Hybrid, Yellow, 'Alhambra', (Saund. 1948), [Gardens] Scott Foundation