You say the majority are text documents? So you're not getting them from Amazon? (Not that Amazon has always been consistent in naming conventions.)
Someone who does a lot of name changing with Calibre will be able to offer suggestions, I'm sure.
Also, just so we know, which Kindle do you have?
Betsy
Someone who does a lot of name changing with Calibre will be able to offer suggestions, I'm sure.
Also, just so we know, which Kindle do you have?
Betsy