Quote:
Originally Posted by stumped
PS For speed, I just go to calibre - find book - open path - view file create date and time for each format in the pop +time up windows explorer window. earliest date = original format. that method probably does not work if you go moving stuff between libraries or transferring libraries to other devices though
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That helped in figuring out which file I had first, which is helpful in it's own right, thank you!
The problem I am still having is, for example I bought and downloaded Harry Potter from Pottermore. I have both the Epub and the Mobi file. The epub file came first, but I can't remember if I merely converted from epub to get the mobi or if I *also* downloaded the mobi format from pottermore too. Any advice?