ID Card 32: Inside the pier warehouse in the south part of Moresby where Vang Chi's kidnapped daughter is found. To enter there, you need to have the Heroes and Villains quest. The Id Card is on a desk, in the room previous to the one where she's locked.
ID Card 33: On a small porch just west of the third loudspeaker switch during the quest The Second Head of Cerberus. A little to the west of the Square safehouse.
ID Card 34: It's in the broken bridge in the west part of Moresby, just before you leave the playable area. Next to a grey upturned car with a corpse. A little to the north of the Pump Station.