Info Wanted on Frisco Ventilated Fruit Cars 7844-7943

Hey Y'all,

I'm looking for any information regarding Frisco Ventilated Fruit Cars 7844-7943. In specific, who the builder may have been. I have the March 1901 ORER (Original Railroad Equipment Register) for the Frisco and it gives me every bit of information but that.

If anyone knows and can share please let me know.

Thanks,

Manny