Oil from the massive spill in the Gulf of Mexico has reportedly oozed into Louisiana's wetlands, and bad weather could hamper efforts to protect the coast line. Two Air Force spray planes are now on standby to drop oil dispersing chemicals into the spill and the Navy says 66,000 feet of inflatable boom and seven skimmng systems have arrived in the region. Jeff Ball of the Wall Street Journal joins us from New Orleans.

A new book looks at the letters Jackie Kennedy received from Americans after her husband was killed. We'll read from some of the letters and we'll speak to Ellen Fitzpatrick, author of "Letters to Jackie: Condolences from a Grieving Nation." We'll also speak to Patricia Kelleher, who wrote a letter to Mrs. Kennedy in 1963. Her husband, John Wiley, was killed just months before the assassination in a submarine accident off the coast of Cape Cod.

A field of 20 horses is set for the run for the roses at Churchill Downs tomorrow. But the pre-race favorite will not be among them. Eskendereya was pulled from the field because of a leg injury. Joe Drape from the New York Times joins us to preview tomorrow's 136th running of The Kentucky Derby, the first jewel in horse racing's triple crown.

Mark Jones helped direct the U.S. Navy's clean up effort in Prince William Sound after the 1989 Exxon Valdez disaster. Now he's in Louisiana as a consultant to fishermen.

Mezzo-soprano Stephanie Blythe has been called "a force of nature" by music critics. This weekend she stars in the title role of Opera Boston's production of Jacques Offenbach's "La Grande-Duchesse de Gerolstein."

Music from the show: 
"Electric Counterpoint 3" Metheny/Reich
"Bloody Oil" Medeski Martin and Wood
"Thresher" Kingston Trio
"Reading" Indobox
"Swing Blues No. 1" Jerry Douglas
"Bandit" Neil Young
"Holy Grail" Toubab Krewe
"Dinah" Preservation Hall Hot 4
"Electric Counterpoint 3" Metheny/Reich"Bloody Oil" Medeski Martin and Wood"Thresher" Kingston Trio"Reading" Indobox"Swing Blues No. 1" Jerry Douglas"Bandit" Neil Young"Holy Grail" Toubab Krewe"Dinah" Preservation Hall Hot 4

Music from Opera segment:

- Johann Sebastian Bach “Ebarme dich, mein Gott” performed by Stephanie Blythe with John Nelson and the Ensemble Orchestral de Paris
- Jacques Offenbach “La Grande-Duchesse de Gerolstein” performed by Stephanie Blythe with Opera Boston
- George Frideric Handel “Awake Saturnia….Iris Hence Away” performed by Stephanie Blythe with John Nelson and the Ensemble Orchestral de Paris
- Christophe Willibald Gluck “Che faro senza Euridice” performed by Stephanie Blythe with the Metropolitan Opera Orchestra
- Georges Bizet Carmen Act II:  “La Fleur Que Tu M’avais Jetee” performed by Placido Domingo