The News Flashbacks cards are a fairly recent addition to the Heritage lineup, first showing up in the 2008 set. These cards feature important news events from the year that the set is based on (1964 this year), and are usually not baseball related.
2013 Topps Heritage News Flashbacks Checklist
NF-CRA Civil Rights Act of 1964
NF-FM Ford Mustang
NF-LBJ Lyndon B. Johnson
NF-MLK Dr. Martin Luther King, Jr.
NF-MP Mary Poppins
NF-RS The Rolling Stones
NF-SP Sidney Poitier
NF-TB The Beatles
NF-WF 1964 World's Fair