You can easily subscribe to this calendar with Apple's iCal, Microsoft Outlook, an iPhone, or any number of other calendars and devices. Click the following link. It should take you to your calendar program where you will be prompted to add this calendar. If you have a mobile device, use it's web browser to navigate to this page of the LWS website and then click the link.

  webcal://lindenwaldorf.org/calendar.ics

If that doesn't work, look for an option to subscribe in your calendar program or mobile device and enter the URL.

For iPhone users - If you use MobileMe to sync your calendars "over the air", subscribe to this calendar from iCal on your Mac and it will automatically show up on your iPhone.