The Miami Herald has several articles in the papers today (Thursday, June 14, 2012) regarding Flag Day. The first, provides Flag Facts, both about the flag as well as Betsy Ross (as well as links to the other articles). The U.S. flag has been modified 26 times since its adoption in 1777. Today's 50-star flag, created in 1960, has been in use the longest.
Additional recommended reading is How to display the American flag, By Alexia Elejalde-Ruiz, Chicago Tribune
Please review my 2011 article regarding Flag Day: Today, June 14, is Flag Day, a special day to fly the US Flag. This article contains links to more information regarding flag customs including:
Air Force Association
UNITED STATES CODE
(Display of U.S. flag)
Title 36, Chapter 10 PATRIOTIC CUSTOMS
Sec. 174. Time and occasions for display
And a list of the dates that we should display the U.S. Flag.