To answer your questions, Shoemaker is out of business and Hume no longer makes the Jordan River Holster. Hume's catalog number for the Jordan River Holster for the S&W K frame was H216 Chart 1. When ordering, you ALSO had to specify barrel length, right or left hand, color, whether plain or basketweave, and hardware choice, nickel or brass.
Your Missouri State Highway Patrol 5-inch Combat Masterpiece would have been carried in a swivel holster by Dehner's of Omaha. Rank below Lieutenant would have been black with nickel hardware. Lieutenant and above brown with brass hardware.
Which reminds, that there are distinctions among the Jordan holsters: dress and river, both available with muzzle plug or closed end, and Myres vs Hume.
The tale goes that Jordan went to Sam Myres first after WWII (the original having been made in Alpine TX by a saddler), and dissatisfied, switched to Hume as 'the' authorized source of the Jordan-marked holsters. That said, it didn't appear at Myres, in that design and with the Jordan name, until several years after Sam died; so his nephew Dace was in charge. The name 'Jordan' stuck there at Myres until 1968 when saddler Webb was running the place.
Meantime Hume started up in '59 and Jordan retired from the force '65. With his TV appearances including a TV series that was based on his life, I expect he had a few bucks to invest as seed money in the new Hume operation (unconfirmed theory) at least via royalties for the name Jordan. It was Jordan who owned the registered trademark (not a copyright) on his name with holsters.
Anyhoo . . . there isn't complete agreement between the two makers (Myres and Hume) what a River holster is or isn't, but as near I can tell from their products and their catalogs, the main distinction is that the long shank version is called the Dress Jordan, and the short shank version is called the River Jordan (quite biblical). Often the latter was produced with a closed end like a Threepersons, but both styles were available both ways and from both Myres and Hume.
1956 Myres when it first appeared:
1962 Myres when the River version appeared:
1963 Hume appearance:
1968 Hume appearance:
Much easier to tell a Dress Jordan from a River Jordan (aka 'rough duty') with the revolver holstered, by comparing the distances from the back of the trigger guard to that lowermost row of sewing for the belt loop; the larger of the two gaps is the Dress Jordan.
Of all the makers only one other used the Jordan name with the holster: Herrett's short-lived gunleather line that was expressly endorsed by Bill and made by Chet's in ID; 1963.
And Hume was the only maker to expressly label his Threepersons holster as a Threepersons (catalogs)

.