Currently Being ModeratedJul 5, 2013 4:05 PM (in response to emd3)
You can do this with or without the iPad connected to your Mac.
Launch iTunes on the Mac. Click on Books under the Library heading. Click on the PDFs. Then click on the PDF that you want to delete in order to select it, and go to Edit>Delete and follow the on screen prompts.
if you are using iTunes 11 and do not have the sidebar enabled, and wish to do so, go to View>Show sidebar or use the keyboard shortcut OPTION+Command+S.
If you do not want to enable the sidebar, the library items can be accessed in the button in the upper left corner of the iTunes window.
Currently Being ModeratedJul 5, 2013 4:12 PM (in response to Demo)
That did it. I was making it harder than it had to be.