Backyard Patrol Overstock Bags

Towards the end of the line, Hasbro found itself with excess stock of sets and parts that they needed to unload.  They revived the 'Backyard Patrol' name that they had used in the 60s for child-sized accessories.  In the 70s the name represented their deep-discount accessories, bagged and stapled to a header card for display on a pin rack.  Almost anything they found in the warehouses could show up in these bags.  Photos above and below are just a sample of sets available. Often these sets were accessory bags that came with a vehicle or as part of a larger set and were sold without the larger parts of the assortment.

Steve Stovall of our sister site 3DSuperJoe.com, and GI Joe and knock-off expert Les Batten put together lists of  these sets they have seen.  While likely not exhaustive, this is a good solid list of  the BYP bags.  I have linked the sets to pages of their original release versions.

Action Accessories - (Green Beret accessories)
Action Adventurer - (Mysterious Explosion)
Boiling Lagoon
Coils Of Doom
Perilos [sic] Parachute - (red&white parachute with white strings)
Pygmy Gorilla
River Adventure - (Safari Into Doom accessories)
Safari Uniform - (Safari Into Doom uniform)
Sandstorm Survival
Space Adventure - (Hidden Missile Discovery uniform & mine detector)
Space Adventure Equipment - (Hidden Missile Discovery accessories)
Space Adventure Equipment - (loose 2 zipper astronaut suit with booties & gloves)
Training Center Accessories
Underwater Adventure - (Shark's Surprise)
Uniform - (Japanese SOTW)
Uniform - (bagged 2 zipper astronaut suit with booties & gloves)
Adventure Of The Mummy
Jungle Adventure

Hasbro of Canada also sold some overstock in a similar manner.  Three known sets are the Sea Adventurer uniform, Adventurer uniform, and the Mike Power uniform from the Secret Mountain Outpost.