This is the only Manhattan Punch I can find on the internet.
http://www.barfliers.com/drinks/VIEW/2684/Jerry%20Sanborn'S%20Manhattan%20Punch/
JERRY SANBORN'S MANHATTAN PUNCH
Punches & Party Drinks
4 Parts Whiskey
2 Parts Sweet Vermouth
3 Parts Cranberry juice
1/2 Part (Max) (0.5 part (max)) Lemon Juice
dash (5 ml) Bitters
Maraschino Cherry Juice
Soda
The ratio of base (everything but soda) to soda is 3:1. Mix all together in a
punch bowl with a cake of ice.