While "Howdy, Neighbor" is the final episode of the TV "Blondie" series, it seems that the episodes are out of order. This is because Alexander says he's 15....though in the previous episode they celebrated his 16th birthday. Not a major problem...and more about this later.
The show begins with some new neighbors moving in next door. The folks are the most stereotypical Texans you can imagine and soon you hear them tell the Bumsteads that they moved away from Texas because the wife is allergic to oil(????). And, when she begins sneezing in the Bumstead home, they believe that the place is sitting atop of oil! Soon Dagwood and Herb are out building an oil derrick in the yard...hoping to strike oil.
This is perhaps the most ridiculous episode of the series...apart from "The Spy". It's so ridiculous that you can only assume they were running out of ideas....and considering it's the last episode, I assume they really did. Occasionally when a show is dying and about to be canceled, they dust off some bad older scripts and film them anyway....and considering the birthday mistake, I assume this is the case here...it was intended to be used earlier but was rejected and only filmed as a last resort.