Helpful item here on cost of first class mail, from Andrew K. Dart’s “The History of Postage Rates in the United States,” giving date of rate start, 1st ounce, each additional ounce, postcard:
May 12, 2008 42¢ 17¢ 27¢
May 11, 2009 44¢ 17¢ 28¢
So get your postcards mailed by 5/10 midnight, because a penny saved is a penny earned. (Hat tip Ben Franklin)
And while you’re at it, get those ounces and pennies right for the coming Day of Replenishing the Big ATM on the Potomac, a.k.a U.S. Treasury, a.k.a. the Master Prestigitator (Now you see your money, now you don’t).
Happy mailing.
Blithe Spirit 