Rare As Rocking Horse Manure: A Legit East Coast Late-Date Part Perf Usage!
Normally, part perf and imperf usages later than early-to-mid-1864 set off alarm bells for possible shenanigans as they were virtually all used up by that point. The major exception are the Late Date West Coast imperfs and part perfs. I’ve written about those before. Genuine imperfs and part perfs can be found with California, Oregon, and Washington cancels as late as 1870. The East Coast is a different matter entirely. By the mid-1860s, virtually all imperfs and part perfs were…