As we've discussed before, nothing says "adventure" quite like a pith helmet, and this cover by V.E. Pyles is proof of that. And, of course, the pulp's title is ADVENTURE, so that's a clue, too. As is the line-up of authors inside for a pulp-savvy reader: Arthur O. Friel, J.D. Newsom, Raoul Whitfield, Hugh Pendexter, Stephen Payne, F.R. Buckley, and Leonard H. Nason. The editor during this era was Anthony M. Rud, a well-known adventure pulpster himself. So the readers certainly knew what they would be getting for their quarter, and they probably were well-pleased with it, too.
I've known of Arthur O. Friel's reputation as a top writer of adventure fiction for quite a while but have never read his work until now. THE PATHLESS TRAIL, originally serialized in the iconic pulp ADVENTURE from October 10 to November 10, 1921, is perhaps his best-known novel and introduces a formidable trio of adventurers: Roderick McKay, Meredith Knowlton, and Tim Ryan. The three of them all served together in the Great War, McKay and Knowlton as officers and Ryan as a sergeant.
As this novel opens, the three friends have journeyed up the Amazon River to the border country between Brazil and Peru. They're in search of an American who vanished in the area several years earlier. Everyone figured he was dead, but then reports surfaced of a strange wild man who matches the missing man's description living in the jungle among tribes of cannibals. The disposition of a valuable estate hinges on determining whether he's alive or dread, and McKay, Knowlton, and Ryan have taken on the job of determining that and bringing him back if by some miracle he's still alive.
Of course they run into plenty of trouble along the way, not just from dangerous wildlife, disease, and unfriendly natives, but also from a treacherous German expatriate with an agenda of his own. Luckily, they have help from a couple of highly capable Brazilian bushmen, Pedro and Lourenco (who star in a series of short stories also by Friel). Everything comes to a satisfactory conclusion, but not before several plot twists and an epic battle between tribes of natives.
Friel was an adventurer and explorer himself, and it shows in his vivid, authentic writing. I'm no expert on South American jungles, mind you, but everything in THE PATHLESS TRAIL rings true to me. And if it's not, then Friel did a really good job of making it seem that way. There's also a considerable amount of humor in the novel, especially early on, and McKay, Knowlton, and Ryan are very likable heroes, if a little stereotypical. They appear in three more novels by Friel. I have the second one, TIGER RIVER, and will read it at some point. The other two, THE KING OF NO MAN'S LAND and MOUNTAINS OF MYSTERY, are harder to find and more expensive. We'll have to see about them later.

After being serialized in ADVENTURE, THE PATHLESS TRAIL was published in hardback by Grosset & Dunlap in 1923. There was a paperback edition from Centaur Books in 1969. Today, various POD and e-book editions are available. I enjoyed it quite a bit, and if you're in the mood for some good adventure fiction, I think it's well worth reading.
I like the pulp covers by Hubert Rogers, and this is a good one. Inside you'll find a serial installment of THE FEUD AT SINGLE SHOT, the first novel by that "new Western writer Luke Short", plus stories by Arthur O. Friel, Theodore Roscoe, James B. Hendryx, and Arthur D. Howden Smith. That's a pretty potent lineup!
I didn't know you could still buy pith helmets, but I checked on Amazon and they have a bunch of 'em. I'll have to give that some thought. In the meantime, here's another great issue of ADVENTURE with stories by H. Bedford-Jones. Arthur O. Friel, Hugh Pendexter, L. Patrick Greene, and an article by W.C. Tuttle. No wonder ADVENTURE is regarded as one of the best pulp magazines ever published.