Sorry,I did not mean to be misleading. I stated that the Goverment did not purchase ANY Whitworths other than the one 70lb gun. I do not have one either though it is second on my project list.
I shoot and Ellsworth gun; a small breech-loader of which there were 20 purchased By Lincoln.
Mr. Don Lutz has a booklet of Dems. on the Confederate carriage for the Whitworth. Lists are here.