Booklet  (1938)  Page(s) [?].  
 
May Davidson (Pleas) (47)
Large, Tyrian pink, midseason. Carpels smooth, tips white; disk distinct, white. Plant medium size, spreading.

Book  (1928)  Page(s) 67.  
 
Check List of Single Peonies.
May Davidson. (Pleas.) Pink.

Website/Catalog  (1922)  Page(s) 8.  
 
Seedlings of Mrs. Sarah A. Pleas.
May Davidson—Single, large fine pink...$2.00

Book  (1917)  Page(s) 6.  
 
We take very great pleasure in presenting to the Peony world the introductions of Mrs. Sarah A. Pleas, formerly of Indiana, now of California. [...] The list we name is intended to be authentic and is compiled from information supplied by Mrs. Pleas and from her friends who have been interested in her Peonies.
May Davidson...

Magazine  (Nov 1911)  Page(s) 70.  
 
MAY DAVIDSON.
Species — P. albiflora.
Origin unknown.
Donated by Cottage Gardens Company.
Description of bloom — Type of bloom single. Form of bloom flat, two rows of guards. Color (total effect) pale lilac rose 1 (178); guards clear; center a mass of yellow stamens; silver tipped bloom. One of the largest singles in existence. Fragrance pleasant XX. Blooming time mid-season. Very large size.
Description of plant — Habit of plant erect, tall, compact. Growth strong and healthy. Stem long, very strong, reddish green. Blooming habit free. Buds borne in clusters, healthy. Foliage well furnished, dark green, medium size; veins reddish green.
Commercial value — For cut bloom poor; landscape value good. Variety as a whole good.

Book  (1907)  Page(s) 64.  
 
632. DAVIDSON, MAY; P.
(1) 1904, Harrison's Paeony Manual, p. 53.

Book  (1907)  Page(s) 48.  
 
Names of some Single Ones...
May Davidson. Harrison. Is very large, pink, striped with silver.

(15 Jun 1905)  Page(s) 192.  
 
Western Peonies. By C.S. Harrison.
I am now securing a fine lot of American grown seedlings, which are far superior to many of the Japanese singles. Terry's Queen is an immense white one of the old albiflora type. Full Moon is a semi-double crimson with a large heart of gold. It is a jolly looking flower, smiling all over. May Davidson is a large pink striped with silver. Mrs. Terry is a beautiful single with a sort of lila color. I have 100 or so of fine singles and it is hard to discard any of them.

Book  (1904)  Page(s) 53.  
 
Single Paeonys.
May Davidson. Is a large pink, striped with silver.