Sorry Tim, I don't know. The info I shared came from a 1930 Cudahy "yearbook" I found at a University library. The listing is of Cudahy owned facilities.
I have no knowledge of any other meat operations in New Hampshire. But there were many local meat operations that did not fall under USDA (ie federal) jurisdiction because they did not sell their products in other states. They would have been under state regs. Here in Iowa we call them "meal lockers" and they tend to cater to local farmers and consumers.
But we are getting abit off topic. Suffice it to say that Cudahy reefers from the Cudahy Packing Co. with CRLX reporting marks would be seen in Nashua NH.