I thought Drood closed in the black.
And, I think it's going to be either Chita Rivera for the win with 7.(8 if you count A Dancer's Life)
1491
Jerry's Girls
The Rink
Merlin
Bring Back Birdie
Shinbone Alley
Seventh Heaven
Potentially tied with Hearn who has 7
Putting it Together
Sunset Boulevard
Meet Me in St. Louis
Ghetto
A Doll's Life
I Remember Mama
A Time For Singing
With Judy Kuhn who has 5.
Metropolis
Rags
Chess
Don't Step on My Olive Branch
Sunset Boulevard
Most of Nanette's shows ran a year or so, and that was in the days where it was easy to re-coup...best I can tell she has 2-4 flops. Gallagher looks like she has more, but if you notice, in 1958 she has a string of 3 really short runs in revivals, which makes me wonder if they were flops or limited engagements.
http://www.youtube.com/huskcharmer