L.M. Boyd, the master gatherer of random facts whose Grab Bag column entertained generations of Sunday Chronicle readers, died on Monday at his Seattle home. He was 79. Louis Malcolm Boyd was known as "Mal" to his friends in Seattle, where he wrote a daily column that was syndicated in 400 papers until he retired in December 2000. The column was called Grab Bag only to readers of The Chronicle, which began carrying it in its Sunday Punch section in 1968. In other towns, it went by other names: Checking Up, Draw Up a Chair, or Fact or Fancy. For...