Which of the following are actual titles for albums by Led Zeppelin?

Houses of the Holy, Stairway to Heaven, Zoso, Led Zeppelin III, In Through the Out Door, Presents

The correct answer is Houses of the Holy, Led Zeppelin III and In Through the Out Door. Stairway to Heaven is a song title but not an album title. Zoso is commonly incorrectly used as the album title of Led Zeppelin IV. And while Presents is incorrect, there is a Led Zeppelin album entitled Presence.