OK! Here's the rest of the story...
AvaJoy ~
Here's some nuggets I left out...
Here is the Prof's thesis...
Thesis that quotes "Guack!..." as a Reference
Note: It's a Computer Graphical Drawing thesis - I have no idea how or where he used Merryman's "Quack!" writings in it! (I did NOT read the entire thesis!) But it's reference "[Mer50]" IS cited on thesis references page 243. :D
"[Mer50] Mildred P. Merryman. Children’s Stories, chapter “Quack!” said Jerusha, pages
117–136. Whitman Publishing Co., Racine, WI, 1950."
And here is where the Prof is NOW:
Prof's current home page
You might try e-mailing him to see if he remembers how he used the book in his thesis - and ask if he ever had or HAS his own copy.
As for your question ~
His reference citation doesn't really SAY if she authored the entire book - but it appears that she might have. I couldn't find any hits on the Publisher - no company web site came up. Can't tell if they are still in business.
This could become a Major Pet Talk Project! ;)