The Lake Ponderosa Association is recommending that all lot owners have a 911 address sign. Not only are the signs helpful for delivery drivers and during an emergency, they can assist your family and friends in finding your lake lot. 911 address signs can be purchased for $25.00 each. Make checks payable to Lake Ponderosa Association and mail to PO Box 751, Montezuma, IA 50171. Please include your lake address and a phone number where you can be reached once your sign comes in.