​Calendar: Week of July 28

CBS News

Here's a look at the week ahead on our "Sunday Morning" Calendar:

Monday is Renewal and Remembrance Day at Arlington National Cemetery, with some 400 volunteers pitching in to help care and maintain the grounds overlooking Washington, D.C.

[Due to capacity restrictions at Arlington National Cemetery, participation is limited to members of the Professional Landcare Network.]

On Tuesday, a thousand pages of love letters from President Warren G. Harding, of all people, to his mistress Carrie Fulton Phillips will be open to the public at the Library of Congress.

Wednesday's the day for the Tuskegee Airmen National Convention in Orlando, Fla. It honors the African-Americans who served in the Army Air Corps during World War II.

On Thursday, Edward Snowden's temporary asylum in Russia expires. Snowden's lawyer says he has asked for an extension.

Friday sees the start of the three-day Lollapalooza Festival in Chicago, featuring dozens of performers including Eminem, Outkast, and Kings of Leon.

And on Saturday, the Pro-Football Hall of Fame in Canton, Ohio, enshrines its Class of 2014.