The Welch Allyn diagnostic set is a so-called "Ophtalmic Diagnostic Set". Basically it is a set used by eye specialists (also called ophtalmologists) to examine the patience' eyes. Welch Allyn simply is a brand producing these diagnostic sets.
Welch Allyn was created in 1915.
One can find more information on Welch Allyn otoscopes on the official Welch Allyn website. The website has many pictures and information about the otoscopes.
I have not received any 2010 Welch Allyn Price List yet from Welch Allyn so I do not believe there is one yet. I would assume the 2010 Price list won't be available till the end of September or later.
Amazon.com sells Littman diagnostic instruments, along with Welch-Allyn and other competitors. You can usually find them at medical supply stores as well, but we'd need a location to give one near you.
I would recommend shopping a few different sites online to compare prices and features.
Heath Allyn's birth name is Michael Heath Allyn.
Allyn Ferguson's birth name is Allyn Malcolm Ferguson Jr..
Allyn Carrell is 5'.
Allyn Camp is 6'.
John Allyn was born in 1917.
John Allyn died in 1979.
Allyn Cox died in 1982.