Book  (Apr 1993)  Page(s) 369.  
 
McGredy's Ivory Hybrid Tea, creamy white, base yellow, 1930, ('Portadown Ivory'); 'Mrs. Charles Lamplough' x 'Mabel Morse'; McGredy. Description.

Book  (1971)  Page(s) 153.  
 
McGredy's Ivory 1929. Very big ivory white hybrid tea of perfect form. Gold Medal, R.N.R.S.

Book  (1954)  Page(s) 51.  
 
Samuel McGredy & Son, Portadown, Northern Ireland.
....The list of [Mrs. Charles] Lamplough seedlings is endless and includes McGredy's Ivory, Mrs. C. H. Rigg, Spun Gold, Armagh and McGredy's Peach.

Website/Catalog  (1945)  Page(s) 21.  
 
'McGredy's Ivory'. Creamy yellow fading to clear white as the bloom opens. The growth and foliage are both good. Light damask perfume; 25 petals. Recommended as a good exhibition variety.

Book  (1939)  Page(s) 36.  
 
Frank Moore, Rose Echoes From the Homeland
There is something almost sublime about McGredy's Ivory, with that chastity of form, petals tall and most divinely fair, freely given on long straight wood—a favourite of mine. 

Book  (1938)  Page(s) 130.  
 
Mr J. Dixon Kinvig, Hawthorn, Vic.  Recent Roses.
McGredy's Ivory. A Rose I am very fond of because it is such a good "doer." I suppose, being more often than not of a white colour, it fails to receive the support that I think it deserves. It has size, length of petal, moderately full, free, good growth and healthy appearance, and appears to be immune to mildew.

Website/Catalog  (1938)  Page(s) 31.  
 
Bush Roses
McGredy's Ivory (Hybrid Tea)... Creamy ivory, light yellow base; large, long pointed flower excellent for exhibition. Vigorous, upright habit. Free and perpetual. A satisfactory Rose. Almost void of perfume. Introduced 1929.

Book  (1936)  Page(s) 126.  
 
Mr. J. Dixon Kinvig, Auburn, Vic.  What New Roses Are Going to be a Success. 
Portadown Ivory. Pure white, fairly full, long-petalled, good clean growth, upright in character.

Book  (1936)  Page(s) 440.  
 
McGredy's Ivory (HT) McGredy 1929; cream-white, base light yellow, large, double, fine form, lasting, solitary or up to 5, fragrance 4/10, floriferous, continuous bloom, growth 6/10, upright. Sangerhausen

Book  (1936)  Page(s) 575.  
 
Portadown Ivory (H) is now called: McGredy's Ivory.