Chicagopedia, Here is a 1977 Kmart Christmas ad that has GAF View-Masters on sale
List of Talking View-Master Reels, View-Master Wiki
GAF Viewmaster B 901 The Seven Wonders of the World - Ancient, Modern & Natural
Vintage Talking View Master with 6 Reels, Works, Spider Man, Charlotte's Web, Christmas
Barbie View-Master – Jenjoy's All Dolled Up Page
Talking View-Master (1970 - 1981)
The Seven ancient wonders are sculpted in clay and include Pyramids of Egypt and the Colossus of Rhodes. The Modern wonders include Satellites in
1970s 7 Wonders of The World View-Master 3 Reel Set
The Seven Wonders of the World
Vintage 1973 Disneyland GAF Talking View-Master Reels
VTG 1960s Gaf Viewmaster Giant Lot 30+ Reels Disney Geopgraphy Lone Ra –
View-Master – Long Island 70s Kid
The View-Master Database
Viewmaster (2) Talking Reels (20+)
May, 2013
Viewmasters and Related Items – Ditto Enterprises