Apple brandy, orange and tart lemon enriched with maple syrup. Strike the perfect balance and this is a delicious combination. This cocktail's name alone...
Also in Trader Vic's Bartender's Guide, revised, copyring 1947, 1972: Jack Rabbit Cocktail - 1 oz applejack, 1/2 oz maple syrup, 1/2 tsp lemon juice, 1/2 tsp teaspoon orange juice. Pretty tasty, but maybe too sweet.