Complex sentence: Some suggest King was the first physician to reach Lincoln but the accounts of the other physicians present, Dr. Charles Augustus Leale and Dr. Charles Sabin Taft, suggest that King was second or third.
Split into simpler sentences: Some suggest King was the first physician to reach Lincoln. But the accounts of the other physicians present, Dr. Charles Augustus Leale and Dr. Charles Sabin Taft, suggest that King was second or third.