SLSF 66000-67799 series coal cars

Does anyone have a diagram of these 66000-67799 series 41 foot coal cars? Does anyone know when they were placed in and taken out of service?

Thanks John

 

I'm no expert on this era, but judging by the fact its a wooden outside braced gondola, I would estimate 1880's and 1890's.

Just my two cents

Ethan

 

From Alabama mining site:

 

Frisco Gondola 67799 ACF, FEB 1913