Where does Mac OS X store contacts in my Address Book? Has this changed from Snow Leopard to Lion?
The path is
~/Library/Application Support/AddressBook/ on both Snow Leopard and Lion.
Note that you can't see the Library in your home folder (as it is hidden by default). You can type in
chflags nohidden ~/Library in Terminal to make it appear permanently, or hold down ⌥ Option while in the "Go" menu of Finder.
On SL, it's in
- ~/Library/Application Support/AddressBook/Metadata
I can't answer for Lion.
Lion is the same....
In High Sierra, its in ~/Library/Application Support/AddressBook/Sources/
from my experience of just trying to recover those files with TimeMachine in Mavericks, the location in Mavericks appears to be incorrect.
OSX 10.9.1 go to Contacts.app, highlight the contact(s) select more than one with the shift key, press DELETE then OK