Downloading Digital Formats

I ordered a lot of books from Sitepoint in the past few years, but I only downloaded the PDF versions when I ordered them.

I now have an iPad and would like to know if it is possible to get the .mobi versions as well so that I can take them with me wherever I go.

Sorry if this is in the wrong place.

You can go to this page and log in, using your email address and order number:

There you should see all ebook formats. Does that help?

I did do that, but there is only one book listed in there, i.e. the most recent one purchased. The other books I am looking for are older and were purchased quite some time ago (over a year).

If you have the email receipts you got back then, they probably have an order number that you need for logging in.