Some things in "The Jeweled Gun" are wild as the wind in Oregon, such as:

Rue Rubidoux

When Bart Maverick arrived in New Orleans to meet Brother Bret, he seemed to be very green, and unfamiliar with the pronunciation of French names.[1] It is very hard to believe that Bart, having grown up so close to his Pappy's beloved river country, would not know the French Quarter like the back of a playing card. Perhaps Bart was merely feigning ignorance to come across as a charming rube to the locals to more easily elicit their help in finding his brother's confusingly named hotel, the Rue Rubidoux.[2]

"Cindy"

The origins of the folk song "Cindy" are lost to history, but the earliest references to it date no earlier than the turn of the 20th century. Undoubtedly Southern in origin, probably from North Carolina, the oldest known lyrics are very different, and often racially offensive by modern standards.[3] It would be hard to believe that the song itself, although very possibly much older, would have been performed as early as 1879 with such a modern style as depicted in "Hostage." Or perhaps Jody Collins was merely far ahead of his time, and should have pursued a career in music rather than taking up kidnapping as a profession.[2]

Vici Leather Dressing

In 1879, after trailing Jody Collins' coach to an abandoned French Quarter wine shop, Bret and Bart Maverick assess their situation while standing in front of a poster advertising Vici Leather Dressing.[1] However, Vici founder Robert H. Foerderer did not establish his  kid leather and accessories factory until 1892, and his ads did not begin appearing much before 1898.[4] Somehow, New Orleans got a leg up on peddling Mr. Foerderer's goods nearly two decades early.