The front side of the Verizon logic board (on top) contains:

Apple A4 Processor

Qualcomm PM8028 Power Management

Dialog D1815A Power Management IC (Apple branded 338S087)

343S0499 - Texas Instruments Touchscreen controller - Apple/TI, part is #343S0499/#F761586G (an up-rev from earlier # F761586C of the iPhone 3GS)

SKY77711-4 - Skyworks poweramplifier module for CDMA/PCS

SKY77710-4 - Skyworks power amplifier module for dual-mode CDMA/AMPS