Never saw one for any former President prior to 43. None in Houston for Bush Sr.. None in Plains, GA. None for Clintons. Neither have I seen one for Obama after leaving office. Of course, if he lives in DC, then already under a larger one for DC itself.
I've got some bad news for you sunshine. WWIII is already well underway.
I think this is a post war on terror thing. Would have to do some more digging. But I don't think there were any at all before the 9-11 attacks.
When Fox was reporting on the search for him back in 2002. They kept showing photos of different people as Speicher.