Related Clues:

• Entertainment debut of 1913
• American institution that turns 100 tomorrow
• The first one appeared on this date in 1913
• & 5 across Without him, you�ll have nothing to do
• This process would run badly without variables
• Pastime that celebrated its 100th anniversary in 2013
• It debuted on December 21, 1913
• This indignant line-up, with first of dissenters on floor
• This producer's slow, laboriously enlisting a pair of unknowns
• Most of those in 22 across and 8 across presumably, staring you in the face
• Where to find the last words of 17-, 22-, 39- and 51-Across
• You're reading it now
• You're doing this now to take a stand against upsetting column by deputy head at The Maze?
• Where solvers 61-Across
• This promise kept by irascible fox