Dutch Sweet Pickles

Use 3 gallons of 2 1/2 - 3 inch cucumbers, halved. Add 3 cups sat. Pour boiling water over to barely cover and let stand overnight. Drain. Add 2 Tbsp. alum and cover with boiling water. Let stand overnight. Drain. Cover again with boiling water and let stand until cool. Pack pickles into jars. Make syrup of 8 cups sugar, 2 1/2 quarts vinegar, 1 quart water and dash celery seed. Boil. Pour over pickles and seal hot.