How much are old letters from the early 1900's worth? (they're from a popular printing company)?

the company is called cowdin printing company
the letters are to and from different people but the one name i can read is charles
most of the letters are personal (not for business purposes)
most of the dates are from 1906 to 1955
thank you
and p.s. im sorry i had to ask this twice, but it wont allow me to see the answers so if u answered the first time please answer again and hopefully i can see what you wrote this time
thanks

?2009-10-03T14:02:15Z

Favorite Answer

Here is their site
http://www.cowdin.com/main.htm

alicegirl712009-10-03T15:59:19Z

Old letters are not valuable unless they are written by well-known figures (like a letter written by a past US President or a movie star) or are regarding some historical event (such as letters written during a war that provide details about battles or a unique soldier's perspective). Ordinary business and personal correspondence doesn't really have any value.