Book  (1958)  Page(s) 373.  
 
Sentry. HT. (Fletcher; int. Tucker, '48.) Bud long pointed; fl. large (4-5 in.), dbl. (25 petals), very fragrant, clear crimson. Dwarf, compact; very free bloom.

Magazine  (Mar 1949)  Page(s) 1. trimester, p. 15.  
 
Vous trouverez, ci-après, une première liste de noms pour lesquels nous avons donné accord à la N.R.S. ...
No Reg.: 31, Name: Sentry, Raised By: R. Tucker & Sons, Registered By: N. Fletcher, Date: 29.6.48

Translation:
You will find below a first list of names for which we have agreed with the National Rose Society....