Found monogramed jacket (haight ashbury)

I have several monogramed fur jackets with "IMA Hellman" on the inside. I believe they may have belonged to Lillian Hellman(possibly her nickname) I would like to see if theses jackets belonged to her or another person in San Francisco. I also found receipts from jewelry stores for items purchased by Mrs. Victor Hellman. I know this is a long shot to connect these jacket with a current family member. Any help in solving this mistory? I only listed this as "found" as it was in my aunt's estate sale