In a small bowl, beat the eggs, milk and butter. Combine the flour, salt, nutmeg and cinnamon; add to egg mixture. Cover and refrigerate for 30 minutes.
Meanwhile, in a large saucepan, combine the sugar, cornstarch, cinnamon and nutmeg. Add the orange juice, orange zest and lemon juice; stir in rhubarb and strawberries. Bring to a boil. Reduce heat; simmer, uncovered, for 15-20 minutes or until rhubarb is tender, stirring occasionally. Set aside.
Heat a lightly greased 8-in. nonstick skillet; pour 2 tablespoons batter into the center of skillet. Lift and tilt pan to evenly coat bottom. Cook until top appears dry; turn and cook 15-20 seconds longer. Remove to a wire rack. Repeat with remaining batter, greasing skillet as needed. Stack cooled crepes with waxed paper or paper towels in between.
To serve, spoon 1/4 cup filling over each crepe; roll up. Top with whipped cream.