Thank you again Bob,
I have the Pullman Standard book of when they first came out with their 40' PS-1 box cars, back in 1947.
The book also mentions of PS's 50' and 60' box cars and of stretching 40' cars, into 50'.
They, also mention of kits for RR's to use and that PS would SPECIAL build cars to the specific orders of RR's for boxes, hoppers, open and closed and some flats and stocks.
No, wonder PS produced more railcars, than any other railcar builder and also PS provided railcar building kits for RR's to use.
But, again, no specific detailed info. as to the use of whatever parts that the N.Y.C. needed and/or for what type of car.
I will search that Web-Site, you posted for me, thanks.
Take care,
Ralph-RJL