I dropped the hinge bolts inside the body, any help retrieving them?

Thanks for the input, but the doors and fenders are off the car. The bolts are in between the welded sheet metal below the A-pillar, and I can't see in there. the cavity looks to split in sort of a Y shape, the rear side should have dropped them to the area of the lower hinge, so they must have gone towards the front of the car where there is no access from the bottom.