[78-L] ^Black Out, White In?

[David Lennick]

 .
> >
> I recall seeing the green chalkboards...but NOT at my school(s) which
> were built and equipped in the twenties if not earlier? Also, I don't
> think anybody...including the manufacturers...promoted them as
> "greenboards"...?!
> 
> Steven C, Barr 
> 

 

Weren't they referred to professionally as "sight saver boards"? We started having them in the early 50s. Still called them blackboards though.

 

dl