The Lost Valley
The Lost Tribes of Venus
The Lost Trail
The Lost Trail
The Lost Temples of Xantoos
The Lost Stradivarius
The Lost Road
The Lost Princess of Oz
The Lost Princess of Oz
The Lost Prince
The Lost Pibroch, and other Sheiling Stories
The Lost Parchment: A Detective Story
The Lost Naval Papers
The Lost Mountain: A Tale of Sonora
The Lost Million
The Lost Middy: Being the Secret of the Smugglers' Gap