There are two Jacob in the Lindner database (the Cabelas gun ebing one of them.) Lindner is known to have sourced guns to Joseph Jacob, William Schaefer & Son, E.C. Schmidt, James Donn, Christopher Funk, T. Golcher, and most famously, Schoverling, Daly, and Gales (Charles Daly) - among others I'm sure.

In regard to Lefever, while I've recorded a couple of "side-cocker" hammerless Dalys built on the Lefever 1880 patent, I have never an actual Lefever gun with Lindner markings.

Best,
Ken