Book  (2001)  Page(s) 52.  
 
Invitation Hybrid Tea, apricot blend, 1961. Rating: 6.4

Book  (1988)  Page(s) 150.  
 
INVITATION = Charlotte Armstrong X Signora

Book  (8 Mar 1970)  Page(s) 127.  
 
Invitation [One of Harry Wheatcroft's selections of the Best Hybrid Teas.] Description... salmon-pink shading to yellow at base... heavily scented with a fruity flavour... A rare beauty, too often overlooked in Britain...

Book  (1963)  Page(s) 24.  
 
Roy and Heather Rumsey, NSW.  New Roses. 
Invitation HT. (H Swim) Long pointed buds and open blooms of 40 petals. Rich salmon pink with a yellow base, and very fragrant. Vigorous, upright, healthy bushy growth. ('Charlotte Armstrong' x 'Signora Piero Puricelli').

Website/Catalog  (1963)  Page(s) 1.  
 
Novelty Roses 1963. Invitation HT (Conard Pyle) Fragrant, salmon orange blooms on upright stems with very strong foliage. Will make a good garden variety. 12/6 each.

Book  (1962)  Page(s) 21.  
 
Dr. A. S. Thomas.   New Roses in Victoria. 
Invitation HT. (Swim, 1960) The deep salmon-orange to copper colouring is most attractive and the form is sometimes up to show standard. Strong perfume. Good growth. An excellent rose for home and garden.