1966 Mustang thermactor filter

Hi All.... Just removed the thermactor smog filter canister... it is empty... Can someone please help identify the proper filter that should be inside this canister. I searched and no results...thanks for your help... can running the car without this filter damage the system1??
 
It's the canister on the left side... when I open it... it's empty
 

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Looks to be the exhaust air supply cleaner used in '66 and '67.
Ford used to make a service package for these, but I don't think you will find one anymore, which is probably why it had been gutted.
 
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