"John Lynch II and III" bookplate with the popular reading-under-a-tree theme. Found in Gladstone by Philip Magnus (John Murray, 1960)
"Phyllis F. Saperstein": a lonely windswept plate found in The Well of Loneliness by Radclyffe Hall (Blue Ribbon, 1928)
"Harriet and George Wasserman" bookplate. Found in The Complete Stories of Maupassant (Blue Rubbon, 1940) An interesting expressionistic naval scene. I like how the negative white space makes up the fish and the slash of light across the sail.
A Harriet Wasserman was the agent of Saul Bellow and wrote a memoir about her life with him. Can't say if this is her plate but it's a good possibility.
Two children's plates. First this generic but nicely colored bookworm plate belonging to "Irene Cole":
And lastly this custom-designed plate belonging to "Van Santvoord Merle-Smith" found in Romantic Story of the Mayflower Pilgrims by Addison (Page, Boston 1924). A beautiful plate with red highlights features Alice and the Rabbit, Santa Claus, and (I'm guessing) the Wizard of Oz.
The illustrator's style seems very familiar (particularly the mountains). I wonder if the "Z" on the ship's flag and the "OV" on the knight's standard comprise a signature?
Van Santvoord Merle-Smith was an aid to General George Patton from the end of WWII until Patton's death and was the subject of the biography Big All the Way Through.
If only everyone were this easy to Google.