Movie buff

[Mullins, Bill]

Movie Buff -- OED has 1973 (under "movie")

Screen: 'Windjammer' By BOSLEY CROWTHER
New York Times; Apr 10, 1958; pg. 32 col 2
"Louis de Rochemont made it, and Mr. de Rochemont, as every movie buff
should no, has done more to put the sea in cineman than anyone making
films."

Pennsylvania | Gettysburg | The Gettysburg Times | 1963-01-12 p. 9 col
1.
"Which Horace McMahon do you know best?  Maybe it's as the toughly
humorous Lt. Mike Parker in ABC-TV's Wednesday night "Naked City" series
(10-11 pm., EST); or maybe, if you're an "old movie" buff, it's as a
toughly humorous gangster or other shady-side-of-the-law types he played
so often in Hollywood."

Film Buff (not in OED)

SILENT-FILM BUFF SHOWS HIS WARES By GLADWIN HILL
New York Times; Nov 21, 1960; p. 33 col 1.(appears in article headline
only)

Sports buff (OED 1968, under buff)
"Shore Sports" by Ed Nichols Maryland | Salisbury | The Salisbury Times
| 1953-02-12 p. 10 col 2.
"He's a real sports buff but he doesn't neglect his school work."

Kentucky Counts on Solid Line By Larry Boeck The Louisville
Courier-Journal
The Washington Post and Times Herald; Sep 16, 1956; pg. J7 col 3.
"Street-corner sports buffs in this horse country still talk horses, of
course."

Theater buff (not in OED)

BOOKMAN'S NOTEBOOK JOSEPH HENRY JACKSON
Los Angeles Times; Dec 26, 1950; pg. A5 col 3.
"It is by Daniel Blum, editor of Theatre World and Screen World annuals
and a theater buff from 'way back."