Image: Plasti-slate 001
Size of this preview: 436 × 600 pixels. Other resolutions: 174 × 240 pixels | 1,700 × 2,338 pixels.
Original image (1,700 × 2,338 pixels, file size: 739 KB, MIME type: image/jpeg)
Description: Original early 1960's ad for "Plasti-slate" the first whiteboard/dry erase board invented by Martin Heit
Title: Plasti-slate 001
Credit: Martin Heit inventor of the whiteboard/dry erase board
Author: Martin Heit inventor of the whiteboard/dry erase board
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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