Errol Flynn, you are a hard man to get!

As a child Marilyn Monroe was a fan of Errol Flynn. After she became a star herself, Marilyn attended several of Flynn's notorious parties at Mulholland Farm. According to Hedy Lamarr, Flynn often held "greyhound" races around his house where six young men would chase a "rabbit", i.e. a topless girl dressed like a Playboy bunny. The bunny was sometimes a well-known actress and at one time she was Marilyn [source]. 

In 1950, Marilyn was not yet a star but a few years away from becoming one. With her supporting roles in two critically acclaimed films All About Eve and especially The Asphalt Jungle Marilyn got noticed by the critics, and at the end of 1950 she signed a contract with 20th Century-Fox where she would enjoy her biggest successes. It was around that same year that Marilyn received flowers from her childhood idol Errol Flynn. Thanking Flynn for his gift, Marilyn wrote him the following sweet note. Marilyn's note was not sent but is believed to have been left at Mulholland Farm's doorstep.

Source: Christies

Transcript:

Dear Errol Flynn. 
You are a hard man to get! I have called you several times to thank you for the lovely flowers and nice note, but have not been lucky enough to reach you - They were lovely, and it was so nice of you to have thought of sending them - Thank you - See you soon, have fun! 

love 
Marilyn Monroe

Note: Marilyn's message to Errol Flynn was written on a calling card from "Mrs. Edward Francis Hutton", i.e. Dorothy Dear Metzger, Hutton's third wife. Why Marilyn used the card or how she came by it is not clear.