You can add Sequoia National Park in California and Theodore Roosevelt National Park in North Dakota to the slowly growing number of parks now selling entrance passes online.

San Francisco Maritime National Historical Park is offering a free training course for those interested in joining the park’s volunteer docent program.

San Francisco Maritime National Historical Park will offer a pair of special events with a Christmas theme on Saturday, December 14. Afternoon activities will include live music, refreshments, ornament-making, and a special visit from Santa Claus. During the evening, join costumed Living History players as they turn the clock back to Christmas in the year 1901.

Sure, it's still August, but that doesn't mean it's too early to start penciling some fall events and activities in the National Park System onto your calendar. Here's a start, and we'll keep adding to it as we hear of events.