In the first half of the 19th century, Christmas was a very different kind of holiday than it is today. People did not have a set way of celebrating. Christmas was not even an official holiday yet.

So, communities around the country honored the day in different ways. Some observed Christmas as an important Christian religious day, honoring the birth of Jesus. Others celebrated the day with parties, music, drinking and eating. And, some communities did not celebrate the day at all.

But, it was during the early 1800s that Americans began to reinvent the holiday. They started combining ancient Christmas traditions with modern American influences. Shirley Griffith and Steve Ember tell the story.

In 1819, the popular American writer Washington Irving wrote a series of five essays published in a book called "The Sketchbook of Geoffrey Crayon, Gent."

The essays describe a wealthy British landowner who invites his farm workers into his home to celebrate Christmas. The landowner recreates a traditional Christmas as it would have been celebrated in the distant past.

Irving praised this looking back to ancient traditions. He liked the idea of different levels of society coming together to enjoy a festive and peaceful holiday. Washington Irving seemed to express concern about the lack of such unifying Christmas traditions in modern America.

Penne Restad wrote a book "Christmas in America: A History." It shows how Americans began to slowly shape Christmas into a unifying national holiday during the first half of the 19th century. She describes how Christmas had different meanings for Americans who came from different cultural and religious backgrounds. Many immigrants brought Christmas traditions from their own countries.

Religion played a big role in how an American might celebrate the holiday. Calvinist Christians banned the celebration of Christmas. But groups such as Episcopalians and Moravians honored the day with religious services and seasonal decorations.

By mid-century, Christian groups began to ignore their religious differences over the meaning of Christmas and honored the day in special ways.

Christmas became an important time for families to celebrate at home. More and more Christian Americans also began to follow the European traditions of Christmas trees and giving gifts. Christians believed that the tree represented Jesus and was also a sign of new beginnings. German immigrants brought their tradition of putting lights, sweets and toys on the branches of evergreen trees placed in their homes.

This tradition of setting up a Christmas tree soon spread to many American homes. So did the practice of giving people presents. As these traditions increased in popularity, the modern trade and business linked to Christmas also grew.

As Christmas became more popular, some states declared the day a state holiday. Louisiana was the first state to make the move in 1837. By 1860, 14 other states had followed. It was not until 1870 that President Ulysses Grant made Christmas a federal holiday.

Americans already knew old Christmas songs that came from England and other areas of Europe. But many new American Christmas songs started to become popular. For example, in 1849, a religious leader from Massachusetts wrote the words to "It Came Upon a Midnight Clear." The song "Jingle Bells" appeared seven years later. And, a year later, a religious leader in Williamsport, Pennsylvania wrote the song "We Three Kings of Orient Are."

And of course, no discussion of Christmas would be complete without talking about of one of the holiday's most famous representations: Santa Claus.

This character is based on the story of Saint Nicholas, a Christian holy person believed to have lived in the third century. Saint Nicholas became known as a protector of children. In his role as a Christmas hero, different cultures have given him different names. These include Sinterklaas, Kris Kringle and Father Christmas. But for most Americans his most popular name would become Santa Claus.

In the 19th century, many Dutch immigrants living in the United States celebrated the feast of Saint Nicholas on December 6. Saint Nicholas was especially important to New Yorkers because of their history as a Dutch colony.

In 1809, Washington Irving published his "History of New York." It lists Saint Nicholas as the patron saint of New Yorkers. He describes the saint wearing a low hat, large pants, and smoking a pipe. Does this description sound familiar?