On Memorial Day, we remember the men and women who have given their lives in the name of freedom. This year, and every year, the day will be observed across America.

When flow'ry Summer is at hand,
And Spring has gemm'd the earth with bloom,
We hither bring, with loving hand,
Bright flow'rs to deck our soldier's tomb.
Gentle birds above are sweetly singing
O'er the graves of heroes brave and true;
While the sweetest flow'rs we are bringing,
Wreath'd in garlands of red, white and blue.

With snowy hawthorn, clusters white,
Fair violets of heav'nly blue,
And early roses, fresh and bright,
We wreathe the red, and white, and blue.

These lyrics are from "Soldier's Memorial Day," words by Mary B.C. Slade and music by W.O. Perkins, 1870.

In 1868, Commander in Chief John A. Logan of the Grand Army of the Republic issued General Order Number 11 designating May 30 as a memorial day "for the purpose of strewing with flowers or otherwise decorating the graves of comrades who died in defense of their country during the late rebellion, and whose bodies now lie in almost every city, village and hamlet churchyard in the land."

The first national celebration of the holiday took place May 30, 1868, at Arlington National Cemetery, where both Confederate and Union soldiers were buried. Originally known as Decoration Day, at the turn of the 20th century the holiday was designated as Memorial Day. In many American cities and towns, the day is observed with a parade.

Today, the president traditionally places a wreath at the Tomb of the Unknown Soldier each Memorial Day. Many veterans of the Vietnam War, and relatives and friends of those who fought in that conflict, make a pilgrimage over Memorial Day weekend to the Vietnam Veterans Memorial in Washington, where they pay their respects to another generation of fallen soldiers. You can view Maya Lin's proposal for the Vietnam Veterans Memorial in the "Memory" section of the exhibition "American Treasures of the Library of Congress." This exhibition, which draws from every corner of the Library's enormous American historical collections, can be viewed online along with more than 40 other Exhibitions.