Invisible Ink Gremlins……

Pages submitted by Jamie from Eric Sloane’s book “Gremlins Americanus” published in the ’40s, during WWII,  which actually used invisible ink in the printing process…

So..it appears it is possible to mass produce a book with invisible ink..

Could Forrest have done the same in his books??? Maybe the keyword is invisible. Maybe the nine clues are invisible…Naah!!…

 

 

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