On the front inside cover is an attached envelope which holds your "magic spectacles". Wait. What? These will come in handy because...
...opposite the title page is the first of six red stereoscopic plates which--when viewed with the blue and red-lensed glasses--creates the illusion of three-dimensional depth. These single-sided pages are each printed on glossy art paper.
The book is also illustrated with black & white drawings throughout.
The stereoscopic images are actually 3D photographs of clay figures that are placed within small dioramas. Would love to see these original figures someday, if they still exist in someone's Snow White colletion.
Image scans courtesy of the Michael Filippello Collection.
The Queen has panthers? Learn a few more interesting anecdotes about this book at Whistle While We Blog.