With this,
I recommend carrying at least 3 copies of:
Your original documents:
Passport,
Visa- if required,
CBP 4457,
SAPS 520,
Drivers licence- any other IDs-especially government IDs,
Letter(s) of Invitation,
Contract(s) and reciepts between you and your outfitter--Booking Agent if used
Birth Certicate (copy notarized)
Shot/Vaccine Records
Airline itinerary
Trip itinerary
Have these items notarized copies of:
Passport
Visa if done here in the US,
Driver licence
Birth Certicate (copy)
All copies of SAPS 520 should have your original signature on them, should the original be inopportune time, lost or misplaced.
Keep originals at hand, place 1 copy in check baggage, 1 copy in weapons case, 1 copy in carry-on.
Should you misplace or anything happen to your original paperwork, this information can very well hope you in obtaining replacements through an embassy, or lessen any disruption in your travel, and having copy of your contract, especially if a booking agent is involved, could come in handy should any conflict/dispute arise.