"My father stated in a letter of 1937 that the picture of
Mirkwood for
The Hobbit was itself redrawn from a painting made earlier to illustrate the passage in
The Silmarillion where Beleg finds Gwindor in the forest of
Taur-nu-Fuin. That painting is beyond question
the one reproduced here, despite the title 'Fangorn Forest'... The only possible explanation is that my father decided that the
Silmarillion painting could nevertheless be used, in the 1974
calendar, as an illustration of the
hobbits in Fangorn Forest. It was probably done at the same time as the other
Silmarillion paintings in the late 1920s."