Horses of Instruction:
A piece by Steve Martland and title of an album including that piece by the Steve Martland Band. It was the sleeve notes from this that told me the origin on the title. I am not sure what I think of the CD yet, certainly possibly not as good as the thing of his I heard on Radio 3 when I was playing my 'see how long I can stand Radio 3 for' game whilst driving home one day. This also appears on the 'Bang on a Can' website, who have some sort of Flash thing for selecting their music which doesn't quite work, but when you can poke it into life I think I prefer them to the Steve Martland Band.
A track by the Gentlemen Losers. Not clear if this is the Steve Martland piece or not.
Someone saying 'I have an imaginary unwritten book about teaching called 'horses of instruction''.
A paper in the journal 'The History Teacher'
Tygers of Wrath:
Title of an artist's website (not Walton Ford, see below)
A 'user movie' on GameTrailers.com
Name of a band: 'Romeo Blade and the Tygers of Wrath'
Tygers of Wrath by Philip Rosenberg - some sort of detective / thriller novel, possibly out of print
Tygers of Wrath, poems of love, hate and invective ed. X. J. Kennedy
Tangentially, a Playstation game 'T’ai Fu: Wrath of the Tiger'
Walton Ford: Tygers of Wrath, Horses of Instruction
A book of the paintings of Walton Ford, whoever he is. He doesn't appear to have a Wikipedia entry, Wikipedia's search suggests Walton-on-Thames and a list of Ford factories.
The moral of the story would seem to be that if you are going to use a quote like this, make sure that you Google for it first to see if others have got there first. Although, of course, you may not care.
The weasels of irk are less worried by snakes than the badgers of aerobics, but the greyhounds of idleness have a better view of the television than the penguin of death.