I owe someone an apology.  That someone is…or rather those someones are The Young Rascals.  In the last post I omitted them from the groups that had songs that spent four weeks at #1 on the 1967 BillBoard Hot 100.  Their song Groovin’ spent four weeks at #1, though not consecutively.  It was at #1 for two weeks on two occasions for a total of four weeks.  So four weeks.  Here you go: