Here are two sites to help:
http://www.amadeuspianos.com/faq.htm#faq12
http://www.balaams-ass.com/piano/chap-4.htm
It was neat to read some of the information from these sites. For example, I never would have guessed that the best pianos were manufactured from 1920 to 1960. Now, in the last couple of decades, the quality has mounted significantly.
A peak in the life of a tuner:
Cut out the noise:
I tuned recently in a nice home. The folks there were not noisy because of rebellious teen agers, nor because of fighting New Joisey oldly weds (for noise, they is the woist). This home had a cockatoo that screamed a flat E all the way through the tuning, the lady of the house tried to vacuum the house in C# while I tuned, and the daughter turned on musical cartoons while I was trying to do the treble.
