fan letter
Noun
Meaning
a letter that is a piece of fan mail
Source: WordNetHypernyms
Examples
As a teenager, Bloch wrote a fan letter to Lovecraft (1933), who gave him advice on his own fiction-writing efforts. citation Bloch's first publication was with the short story "Lilies" in the semi-professional magazine Marvel Tales (Winter 1934).
Aside from getting to introduce Marc Brown (who I wrote a fan letter to back when I was 19), I also had the great opportunity of introducing Jack Gantos.
In 1900 his laudatory review of Henrik Ibsen 's When We Dead Awaken was published in Fortnightly Review ; it was his first publication and, after learning basic Norwegian to send a fan letter to Ibsen, he received a letter of thanks from the dramatist.
Also, Karloff goes digital, Kirk meets Robert Crumb, Forrest Ackerman drives a hard bargain and Gilbert pens a fan letter to Lon Chaney Jr!
During this period most of his communication was in the form of written correspondence and he insisted on answering every fan letter personally.
I later wrote her a fan letter and she wrote me back personally.