A bunch of Person cards were named via cut & paste and ended up with weird invisible characters in them that cause Wagn to not recognize them in some circumstances:
Every Person card has a +email card but you can see here that many of them do not show up: http://letstalkeugene.org.718.cldstr.com/Contact_infos
If you type a few letters of someone's name (eg "Audrey Brown") in the Search bar and then choose "go to" from the menu Wagn offers to add the card! (You can see that card exists via http://letstalkeugene.org.718.cldstr.com/Person+*type+by_name