1) Ross, Katharine (Katharine K.) b.1950- also writes under Kate Klimo; authors primarily childrens' books.
KKR's LC|n 84211591) / KK's LC|n 87903759)
2) Ross, Katharine (Katharine Juliet) b.1940- American actress. LC|n 88226082).
NOTE: Her Wikipedia webpage lists Ms. Ross as author of several childrens' books - however, these were not "sourced." On IMDb, Ms. Ross is listed as author of 2 childrens' books (neither of which were among those listed on her Wikipedia page) in an unsourced trivia section.
FINAL RESULT: Books were assigned to the "Katharine Ross" as detailed in the Library of Congress Catalog and Name Authority Files.