Substantial changes (page number and summary are supplied):

• 17: There is some uncertainty that George Armstrong Custer is in the photograph.
• 57: Revised the duration of Lincoln's axe-use.
• 88: Corrected error about myopia and reading; revised acuity discussion.
• 113: Identified Charles Dana as a primary source for tale of Tad's defective palate.
• 130: Added Figure 182 to further illustrate atypical lips in MEN2B.
• 134: Added "or be normal" to legend of figure 134.
• 135: Added reference to eyelid lump in Figure 174.
• 143: Re-worded to be consistent with Dana's first-hand description (page 113).
• 174: Multiple photographs show mass in right eyelid.
• 177: Footnote mentions sun exposure and vitamin D as possible disease modifiers.
• 180: Added a new bullet point.
• 182: Added figure of relatively thin-lipped 53-year-old woman with MEN2B.
• 193: Added protruding ears as a sign of low muscle tone.
• 204: Removed statement that Eddie's left eye is open wider than the right.
• 214: Substituted observation of the Marquis de Chambrun for that of Emilie Helm.
• 240: Added protruding ears to figure.
• 252: Widened figure by 7.5% to conform to proportions of other copies of this photo.

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