A scribbled poem Jim Morrison wrote for a stewardess who once joined him for dinner is expected to fetch $20,000 (GBP11,100) at an upcoming auction.

The tragic frontman of The Doors wrote the impromptu poem on a napkin at the Casa Escobar in Santa Monica, California, in the summer of 1968 after trying to woo a young diner called CAROL.

According to the stewardess selling the unique rock memorabilia, Morrison invited Carol and a friend at his table, where they chatted about airlines and flights.

To mark the occasion, the rocker/poet then asked a waiter for a pen and wrote a poem based on the conversation they'd just had.

The scribbled poem is being offered by internet fanzine Doors Collectors Magazine.