In the winter of 1806-1807, Baroney Vasquez, Dr. John Robinson, Sgt. William Meek, Cpl. Jeremiah Jackson, John Brown, Jacob Carter, Thomas Dougherty, William Gordon, Hugh Menaugh, Theodore Miller, John Mountjoy, Alexander Roy, Patrick Smith, John Sparks, and Freegift Stoute explored with Zebulon Pike along the Arkansas River, through South Park, Grape Creek, and the Wet Mountain Valley, and crossed the Sangre de Cristo Mountains.