Just came across this View-master Model F lighted viewer and some reels

My Hardware Round-Up Room With A Viewmaster

Retro Thing: Ultimate View-Master Viewers

View-Master - Wikipedia

William B. Gruber

View-master Model F Lighted Version 1959-1966

Sawyers Stereoscope Viewmaster

A ensemble of the vintage brown bakelite Model E viewer and its dedicated light attachment for the Model E viewer. made by Sawyer's from 1955 to

View-Master Model E Viewer and Light Attachment - vintage - brown bakelite

Sawyers Stereoscope Viewmaster

What's Inside a View-Master? And How to Clean One – Curi-Oh!

My Hardware Round-Up Room With A Viewmaster

View-Master Vintage 1960's Sawyer's Model F Lighted Stereo Viewer

My Hardware Round-Up Room With A Viewmaster

Vintage 1950s Viewmaster Brown Bakelite Lighted Viewer Model F

View Master Junior Projector with 19 reels and catalog from 1948