Book  (2000)  Page(s) 194.  
 
‘Daybreak’/’Day Break’: arbuste… jaune d’or, virant au jaune primevère avec l’âge et ponctuées d’étamines ambrées… parfum musqué… arbuste ordonné, à feuillage brun cuivré au printemps, vert émeraude en été, idéal en sujet isolé. Pemberton, 1918.

Book  (Apr 1999)  Page(s) 365.  
 
Daybreak Hybrid Musk. Pemberton 1918. Parentage: 'Trier' x 'Liberty' (Hybrid Tea). The author cites information from different sources... light yellow... Pemberton called it a Noisette...

Book  (1993)  Page(s) 207.  Includes photo(s).
 
A delicate yellow Hybrid Musk. Pemberton (Britain) 1918. ('Trier' x 'Liberty')

Website/Catalog  (1985)  Page(s) 17.  
 
Daybreak.....4 x 4’. 

Article (website)  (1982)  Page(s) 14.  
 
Day Break (Hybrid Musk) An early flowering semi-double rose bearing several yellow flowers on a stem.  Dark glossy foliage.  1918. H  (S) 4 x 5’. 

Book  (1936)  Page(s) 196.  
 
Daybreak (hybrid noisette) Pemberton 1918; whitish yellow to golden-yellow, semi-double, in clusters of 3-5, continuous bloom, growth 6/10, bushy, short. Sangerhausen

Book  (1933)  Page(s) 171.  
 
DAYBREAK. The Rev. J. H. Pemberton, 1918. Everblooming shrubby Musk with clusters of single golden yellow flowers. Pemberton called it a Noisette.

Website/Catalog  (1929)  Page(s) 62.  
 
Pemberton's Roses
A[...] class tending to be hardy, everblooming climbers, originated in England by the Rev. Joseph Pemberton. These are hybrids of Rosa moschata, the Musk Rose, whereas the Lambertianas are Hybrid Multifloras. Captain Thomas’ Roses offered below are similar, partaking of elements from both classes, combined with original traits. These Roses are $1 each for strong, field-grown plants
Daybreak. Hybrid Noisette. (1918.) Golden yellow, almost single flowers, freely produced in clusters. A vigorous, continuously blooming shrub 4 to 5 feet high.
A yellow Rose of much grace and charm, displaying many soft variations of color.

Book  (1916)  Page(s) 118.  
 
[Pemberton's] Daybreak forms a vigorous, low bush with profuse yellow buds opening to dainty white flowers, but the petals of fading blooms turn brown, curl up tightly, and soon spoil the appearance of the bush unless they are removed daily...