`Pache makes a couple of excellent points here ( for the benefit of those of you thinking of heeding his advice).Why not use yellow pages. If it was me I'd write a good, well written letter and send it to them. Make sure you get their name right, and sign in pen. Handwriting the envolope may help.Follow up a week or so later with a phone call. Even if you get nothing - feedback may help.
Also decide what you would be prepared to do - free helping out? That sort of thing. Don't sell youself too short in the letter nor seem to desperate!
I, for one, hate to open a letter filled with typos, spelling or grammatical errors, or something that obviously hasn`t been proofread.
If you are going to approach us for work, remember that this job entails a fairly high intelligence level. If you come across as a semi-illiterate oik, your letter is going in the round file (bin).
You are trying to impress us with your knowledge, and make us think you have an education. The 2 most important topics are Maths and English. If your English looks carp, we`re likely to dismiss your maths talents, out of hand.
My opinion, anyway. If you cannot string a coherent sentence together, or spell your own name correctly, you won`t be getting work from me.
KME