The index of oboe music including the index of baroque trio sonatas / compiled and edited by Wayne Wilkins
Magnolia, Ark. : Music Register, c1976, and supplements to 1978
MUSIC Ref ML128.O2 W5
Music for oboe, oboe d'amore, and English horn : a bibliography of materials at the Library of Congress / compiled by Virginia Snodgrass Gifford
Westport, Conn. : Greenwood Press, 1983
MUSIC Ref ML128.O2 G5 1983
Soloistic English horn literature from 1736-1984 / William Wallace McMullen
Stuyvesant, NY : Pendragon Press, c1994
MUSIC Ref ML128.O2 M3 1994
University of Iowa music source book : wind and percussion materials / [faculty members of the University of Iowa School of Music]
[Iowa City] : Paul Anderson, 1986
MUSIC Ref ML128.W5 I48 1986x
M - Scores
M65-69--Solo oboe music
M245-247--Music for oboe and piano
M1022-1023, M1122-1123--Oboe with orchestra and string orchestra (includes full scores and solos with piano arrangements)
ML - Music Literature
ML128.O2--Oboe music: Bibliography
ML940-943--Books about the oboe
MT - Instruction and Study
MT360-379--Methods, etudes, orchestra studies, etc.
Oboe music
Oboe and piano music
Suites (Oboe)
Concertos (Oboe)
Concertos (Oboe with string orchestra)
Oboe with orchestra
...and there are lots more. Do a subject search for "oboe" and see the 110 different subject headings that begin with "oboe."
Oboe music--Bibliography
Oboe--History
Oboe players
... and lots more. Search "oboe" in the library catalog and find about 50 books, more than 700 recordings and more than 1000 scores.