Possible Clues:

• Horse breaking into a sort of dash in Dallas or Washington?
• Word derived from someone's name
• Label derived from name of space occupied by horse
• James Parkinson or Alois Alzheimer
• Tresses
• Name of a thing derived from a person
• Franz Mesmer, for "mesmerize"
• Silhouette's one small horse breaking into dash
• George Ferris, for the Ferris wheel
• Name-lending person