Pre Civil War

1848   The cornerstone of the Washington Monument was laid on July
   4th, and deposited within it were many items including the Holy Bible
   presented by the Bible Society.
1849   Gold is discovered in California
1850   Jenny Lind, the Swedish Nightengale, begins her tour of               America with P. T. Barnum (see related patterns below).
1859   The First oil well is drilled in Titusville, PA.
1863    President Lincoln delivered the Gettysburg Address
1864    "In God We Trust" first appears on U S Coins.
1865    The Atlantic telegraph cable is completed (see related               pattern below).

Advances & Inventions
1853   Henry Steinway begins making pianos.
1854   Thoreau wrote Walden; The Republican Party is formed.
1858    Erasers were added to pencils!
EAPG patterns from these years--