Here's a major list update:
Jammin John (Galileo's Cannonball)
Josh Shullener (Wild Bill Hickok and the Dead Man's Hand)
Billy (John Henry's Lost Hammer)
Damian (John Sutter and the Map to the Lost Gold Mine)
Taylor (The Helmet of Genghis Khan)
Steve (The Keys to the Alhambra)
Robbie (The Pendant of Kamehameha)
Shawn (The Trojan Horseshoe)
Nick (Henry the Eighth's Great Seal)
Robert (The Lost Logbooks of Magellan) (1)
Mitchell (The Moccasins of Geronimo)
James (Ponce de Leon and the Lost Fountain of Youth)
Sean (The Golden Cup of Belshazzar)
Shane (The Oracle Bowl of Delphi)
Roberto (The Paintbrush of Leonardo Da Vinci)
Aaron (The Treasure Map of Jean Lafitte)
Eddie (The Helmet of Joan of Arc)
Christopher (The Stone Marker of Leif Erickson)
Chris (The Golden Jaguar of Atahualpa)
Tim (Alexander and the Gordian Knot)
Danny (The Medal of Sir Edmund Hillary)
Damon (The Silver Saddle Horn of Hannibal)
David (King Tut's Cobra Staff)
Chris (Pecos Bill's Lost Lariat)
Albert (The Dragon Lady and the Blue Pearl)
Gareth (The Codebook of Mata Hari)
David (Lawrence of Arabia's Headdress)
Adam (The Collar of Davy Crockett)
Robert (The Snake Bracelet of Cleopatra)
C.J. (The Golden Stallion of Ali Baba)
Jonathan (The Silver Cannonball of Granny Nanny)
Robert (The Applewood Amulet of Emiliano Zapata)
Brandon (The Bone Necklace of the Blackfeet Chief)
Josh (The Cracked Crown of the Spanish King)
Brett (The Diary of Dr. Livingstone)
Peter (The Electrified Key of Benjamin Franklin)
Joshua (The Imperial Purple Robe of Empress Theodora)
Derrick Kujak (The Lost Love Letter of Captain John Smith)
Ty (The Lucky Medallion of Atocha)
Chris (The Mush Pot Hat of Johnny Appleseed)
Chris (The Walking Stick of Harriet Tubman)
Benjamin (The Crown of Queen Nzinga)
Joel (The Enormous Iron Nose Ring of Babe the Ox)
Brad (The Ivory Elephant of Scheherazade)
Kevin (The Jeweled Necklace of Montezuma)
Justin (The Mask of the Man in the Iron Mask)
Michael (The Missing Eye of David)
Justin (The Plumed Headdress of Cosa Rara)
Bobby (The Shriveled Hand of Efoua)
Brian (The Two-Cornered Hat of Napoleon)
Shane (The Very Tall Turban of Ahmed Baba)
Nick (The Leopard-Skin Cloak of Annie Oakley)
Tony (The Snakeskin Boots of Billy the Kid)
Matt (The Bonnet of Dolley Madison)
Jason (The Broken Wing of Icarus)
Shem (The Golden Earring of Henry Morgan)
Chris (The Golden Pepperoni of Catherine de' Medici)
Jason (The Levitating Dog Leash of Nostradamus)
Nick (The Missing Weather Maps of Charles Lindbergh)
Jim (The Priceless Portrait of the Polynesian Girl)
James (The Secret Battle Plan of Nathan Hale)
Matthew (The Bullet-Riddled Handbag of Belle Boyd)
Jonathan (The Comet-Embroidered Battle Flag of William the Conqueror)
Travis (The Discarded Seal of Ivan the Terrible)
Brett (The Dried Apple Half of William Tell)
Eddie (The Dried Ear of Corn of Sojourner Truth)
David (The Enormous Feather of the Me Linh)
Jay (The Good-Luck Watch of Empress Eugenie)
Kris (The Jewel-Encrusted Egg of Catherine the Great)
Asher (The Jeweled Scabbard of Sforza)
Judge (The Lily-Crested Crown of Clovis the First)
Mike (The Lion-Slashed Jacket of Sacagawea)
Jarrid (The Lost Hornpipe of the Pirate Captain)
Dean (The Lost Taj Mahal Turban of Aurangzeb)
T.J. (The Metal Beard of the Egyptian Queen)
Keith (The Missing Portrait of Hans Holbein)
Josh (The Mummified Hand of the Egyptian King)
Gator (The Mussel-Shell Armor of Apanuupak)
Jared (The Mystical Spellbook of the Imperial Wizard)
Ryan (The Pearl Necklace of Gwalior)
Quentin (The Red Sash of Tokugawa Ieyasu)
Nate (The Royal Torque of Queen Boadicea)
Kevin (The Ruby Earring of Benzibab)
Zac Turney (The Secret Map of the Bandit Queen)
Mike (The Thornwood Gavel of Judge Roy Bean)
Derek (The Upside-Down Compass of Henry Hudson)
Jared (The Useless Map of the Chibcha Chieftain)
Jeremy (The War Fan of the 47 Ronin) (1)
I hope this is right. Feel free to let me know if I made a mistake.
