Presidential Trivia, Part Two

Trivia on the first 10 presidents here: PRESIDENTIAL TRIVIA, PART ONE And now for trivia on the next 10! Comment your guesses and I'll post answers later.
  1. 1.
    For reference, your options for guesses are presidents 11-20:
    James K. Polk, Zachary Taylor, Millard Fillmore, Franklin Pierce, James Buchanan, Abraham Lincoln, Andrew Johnson, Ulysses S. Grant, Rutherford B. Hayes, James A. Garfield
  2. 2.
    Who was the first president born outside the original 13 colonies?
  3. 3.
    Which president held the first White House thanksgiving dinner?
  4. 4.
    Who's wedding ceremony was performed by Abraham Lincoln's cousin?
  5. 5.
    Who was nicknamed "Old Rough and Ready"?
  6. 6.
    Whose wife organized the first White House library?
  7. 7.
    Which president grew a beard because an 11 year old girl wrote him a letter saying he'd look better with one?
  8. 8.
    Which president refused an honorary law doctorate because he didn't think he deserved it academically?
  9. 9.
    Who's the only bachelor president in American history?
  10. 10.
    Who was the first president to be born in the 19th century?
  11. 11.
    Who was first to have hot and cold running water in the White House?
  12. 12.
    Which president's daughter married Jefferson Davis?
    But she got sick and died 3 months later, so she didn't see the civil war
  13. 13.
    Who put the first Christmas tree in the White House?
  14. 14.
    Who established the first national park by creating Yellowstone?
  15. 15.
    Who was first to have typewriters and telephones in the White House?
  16. 16.
    Who's the only president to receive a patent?
  17. 17.
    Which was the second president to be assassinated?
  18. 18.
    Who was president when Texas joined the Union?
    I'm from Texas. I think it's a rule somewhere that I had to include this question.
  19. 19.
    Which was the last president to be born in a log cabin?
  20. 20.
    Which president's actual first name was Hiram?
  21. 21.
    Who was the first president to be impeached?
  22. 22.
    Which president sent the first transatlantic cable in an exchange of greetings with Queen Victoria?
  23. 23.
    Who was ambidextrous and able to write in Latin with one hand and in Greek with the other hand at the same time?
  24. 24.
    Whose wife was the first to be called "First Lady"?
    And she was also the first First Lady to be a college graduate!
  25. 25.
    Whose nomination and victory were the first to be reported by telegraph?
  26. 26.
    Who was the first president to make an annual salary of $50,000/year?
    Everyone before him made $25,000/year, though Washington refused his salary
  27. 27.
    Who, before being president, was secretly part of the Underground Railroad and publicly defended runaway slaves in court for free?
  28. 28.
    Which president didn't allow alcohol in the White House?
  29. 29.
    While still president, who was fined $20 for riding a horse too fast?