Book  (1955)  Page(s) 92.  
 
W. Beattie, Thornbury, Victoria. ....Firstly, one thinks of Alister Clark, hybridiser of roses and daffodils, scholar, benefactor and a real gentleman. He raised, over the years, several thousand seedlings. The number of Princeps in his famous black diary was 4141.

Book  (1953)  Page(s) 34.  
 
Mr. S. J. Bisdee. Red Roses in Tasmania. Alister Clark’s Princeps is a splendid climber of the decorative type and should be grown freely. It is a lovely thing.

Book  (1952)  Page(s) 53.  
 
Dr. A. S. Thomas. Red Roses. Princeps appeals to me more than Climbing Etoile de Hollande.

Book  (1950)  Includes photo(s).
 
p43. Princeps. Alister Clark, 1942. D[ecorative] L[ight] S[andy soil] A [the best of roses] P[illar] T[ripod]

p97. Princeps (Cl.) Alister Clark.

p200. Colour Picture. ‘Princeps’. Climbing Hybrid Tea.

Book  (1949)  
 
p80 [ just the name mentioned]

p143 ...growing in popular favour each year.

Book  (1948)  Page(s) 101.  
 
Mr. S. J. Bisdee. Tasmanian Rose Notes. Princeps. Mr. Clark’s grand red pillar rose, is a fine sight growing up my ‘Princeps Pergola’. It has been the admiration of all, and in hospital, where my wife lies sick, it has brought forth exclamations of delight from all who have seen it. I wish Mr. Clark could see how well so many of his creations are doing in my garden.

Website/Catalog  (1947)  Page(s) 44.  
 
Princeps (H.G.) A. Clark, 1942. Fragrant. 6. An extra large sweet scented dark red pillar rose, making a very fine show in spring. Everywhere.

Book  (1944)  Includes photo(s).
 
p 23 [black and white picture]

p31 Alister Clark. I have some fine pods of seed on Crimson Glory x Princeps and hope for some of its good points to be more in evidence if the seed will germinate.

p32 Alister Clark. .....treasured

p85 Mr. S. J. Bisdee. Roses in Tasmania. Princeps. This is a fine vigorous climber producing buds of lovely form and deep crimson in colour. The bloom is semi-double and the foliage good. With a few more petals and a bit of fire in the colour it would be a wonder; as it is, it is a fine thing, and I am covering a pergola with it ......

p88.  Mr. T. G. Stewart.  Decorative Varieties of Merit.
Princeps. A dark red climber which will be popular when better known. It has beautiful long pointed buds and a nice perfume.

p97 Mr. W. Beattie of Thornbury, Vic. Princeps is a welcome addition, but does not supersede any of the old favourites. It is rather leggy in growth, having large healthy foliage, but not quite enough of it to protect the stems from the summer sun. In consequence, it is affected by sunburn. It is a spring bloomer. The blooms are seen at their best as cut flowers in small vases containing two or three blooms. The blooms have a decorative charm which is most fascinating. It has very few thorns and the stems are strong and erect. The colour is rich and improves with age. It is worthy of a place in any garden, but should not be planted where dense growth is required.

Book  (1943)  
 
p45 Alister Clark: I feel sure a good many more of our Australian Roses deserve the same chance, such as .... and Princeps, of which Messrs. Hazlewood report so favourably in Sydney.

p83 Mr. S. J. Bisdee. Tasmanian Roses. Princeps. This new red climber of Mr. Clark’s made very good growth, but there was only one indifferent bloom on the terminal of a cane and I crossed it. The late Mr. W. H. Dunallan praised this thing highly so I am looking forward to seeing it in good form next season.

Book  (1942)  
 
p78 Princeps. Clb. H.G. (Alister Clark, 1942). – An extra large sweet scented dark red pillar Rose, very striking in spring. Well tried out by Mr. Dunallan, who is enthusiastic in his praise of it.

p86 Mr. T. G. Stewart, Box Hill, Vic. Concerning novelties for 1942, I only have two varieties, both Australian raised, namely, ...... and Princeps. Both are climbers and both crimson. Princeps is very vigorous in growth, and although not very full bodies it has a nicely formed long pointed bud of rich crimson. It looks promising.

p91 Mr. W. H. Dunallan, Northcote. I am pleased to see in the various catalogues that the Alister Clark Rose Princeps is being sent out this year. This is indeed good news to rosarians. I have had the privilege of watching this Rose for the past four years and have no hesitation in declaring it to be the best Climbing Rose in existence; a vigorous grower, beautiful bright foliage, and a bloom every bit as thrilling as Poinsettia at its best – a glorious red climber.

[Note this rose was advertised in Australian Rose Annual in the following years:
Princeps. Pillar 42 43 44 45 46 47 48 ]