Mia Farrow on the first-ever cover of People Magazine. - 

From the Marketplace Datebook, here’s a look at what’s coming up Tuesday:

  • In Washington, a hearing in the House focuses on the role of technology in protecting Americans from international cybercriminals.
  • People Magazine turns the big 4-0. The first issue was published on March 4, 1974. Mia Farrow graced the cover. 
  • And tomorrow is National Grammar Day. You can do your part by speaking and writing well and placing your commas correctly.