The enigmatic Lincoln Features, which was run by Horace T. Elmo, is a syndicate that sold features to weekly papers. Weeklies are a notoriously bad market, and Elmo never had a great deal of luck selling his material. Lincoln was a curious mix of slapdash and brilliant work. The syndicate's main claim to fame is that Jack Kirby got his start there. Unfortunately Kirby, as far as I know, didn't discuss the syndicate in any depth in later years, so we really don't know much about it. Some of the Lincoln material is so rare that it has yet to be found actually appearing in a newspaper (Kirby's Abdul Jones, for instance, so far exists only in the form of a run of proofs that Kirby held onto) - source http://strippersguide.blogspot.com/2011/05/obscurity-of-day-detective-riley.html
Strippersguide.blogspot.com explains that when you DO find a Lincoln strip in a Weekly it usually only runs for only 4-6 episodes which means that the syndicate sent the newspaper some samples, which the Weekly would then use without any intention of picking up the service on a paying basis.
I don't know if this example of Kirby's early strip work appears in EVERY Kirby biography but if you've read Mark Evanier's KIRBY KING OF COMICS or Greg Theakston's JACK KIRBY TREASURY you've already seen this strip.