Despite their usual lack of any incidental music (the most notable exception being the rinky-tink piano music heard frequently in the "Dudley Do-Right of the Mounties" segments), the Jay Ward studio would occasionally use tunes from production libraries. Here's a short (and incomplete) list of the stock cues I'm aware of them using in their programs.
Also included are tracks initially composed for Ward projects by Dennis Farnon that later wound up as stock music on the Chappell and Conroy libraries, and various stock tracks mostly rooted from the De Wolfe library that replaced certain underscore cues by Frank Comstock when the "Rocky and Bullwinkle" shows were remastered for international syndication in the late 1990s.
Fractured Fairy Tales:
Custard Pie Capers - Phil Green (Capitol Hi-"Q") (also known as “PG-206 Comedy Circus”) (Heard in "The Ugly Duckling" and "Cinderella Returns".)
"Fireman" (LAF-1-2) - Jack Shaindlin (Langlois Filmusic) (Heard in "The Ugly Duckling".)
LAF-72-3 - Jack Shaindlin (Langlois) (Actual name unknown) (Heard throughout “The Ugly Duckling”.)
Peabody’s Improbable History:
Light Movement (ZR-47) (Capitol) (A brief snippet is heard in “Robin Hood”.)
Cues used in the 1997 remasters (all De Wolfe unless noted):
Approaching Monster - Rico Calle (Major Records/Valentino)
Charlie Chaplin Chase - Keith Papworth (Heard in “The Ugly Duckling”, “Ridinghoods Anonymous”, and “The Princess and the Goblins”.)
Tippy Toes - Jack Trombey (Heard in “Sir Galahad.”)
Who Wears the Pants? - Jack Trombey
Dennis Farnon cues composed for Ward and later sold as stock music on Conroy and Chappell:
Hoppity Hooper pilot (The Thing in the Spring) (in order of appearance):
Stay With It
Pig and Whistle
Lords and Ladies
Move It
Time After Time
Turn the Screw
Drag
Here Endeth the Session
Fractured Flickers (some of these cues were also released on a cassette of music from the Ward shows sold in the Dudley Do-Right Emporium gift shop under different, more whimisical names. These may be the original names of the tunes, and then given different names when released by Conroy and Chappell):
Bring on the Girls (aka "Game in Mulch Wedlock")
By George, That's Music (aka "Mistress of Stoke D'Abernon")
Campus Caper (also used as the theme for the “Rah Rah Woozy” pilot. Also known as "Trumpington Rah Rah Rah")
Can, Can, Can
Comedy Cocktail Pt. 2-1 (aka "East Grinstead High Kick")
Football March (aka "Girls and Deeping St. James)
Funny Side Up (A-G)
Play That Pretty Melody (aka "Thou Art Minor Twigs")
Rah, Rah, Rah (aka "Temple Sowerby Strikes Out")
Remember the Twenties (aka "Burnham on Crouch")
School Salute
They're Playing Our Tune (aka "Visit to Cow Roast Inn")
This is Our Dance, Bert (aka "Emma Twiggs at Bignell's Corner")
SUPER CHICKEN (2nd pilot only):
Love on the Duckpond
It's Jazz Time Again
Honorable Mention:
Hippos and a Stranger - Dennis Farnon (This cue was originally recorded as a stock cue for Ward’s in-house tracking library, and can be heard in the “Fang the Wonder Dog” pilot and some Bullwinkle puppet wraparounds, but was later re-recorded with a fuller orchestra for Conroy BMLP 0025)