Ran across this listing today, and I know some of you here are Baynes collectors too:

[Original drawing:] 'Unicorn', for 'The Most Wonderful Animals that Never Were' by Joseph Wood Krutch.

Description: black ink with some heightening in white, some pencil marks visible, 16 x 10.5 cm approx (image size, framed size 44 x 34.5 cm) mounted and framed in English oak under museum glass using high-grade acid-free materials, very good condition

Publication Details: circa 1969

Notes: Signed by the artist in pencil and with her note as to the book and section for which it was intended.

Price: £2,000
https://www.blackwell.co.uk/rarebooks/book.php?id=63981