The following prefabs were obtained from PrefabLand (http://www.nin64.com/prefabland).
Please read any accompanying text in the prefab .zip files for specific
author instruction.  As always, when using someone elses prefab, be sure to
adhere to their wishes and give them credit where credit is due.
.
454 - Morane Saulnier N
458 - Fire Starter
459 - Above Ground pool
460 - Meat on String
461 - Canoe
462 - AH-1 COBRA_v2
464 - Corner Light
465 - World War I Style Hanger
468 - Tie Fighter
471 - Keypad
472 - Pepsi Machine
473 - Techno console
475 - Corridor Light
476 - Red Train
477 - Techno suspension bridge
478 - Seige bunker
479 - Killer Shed
481 - Funk Pool
482 - Skylight
483 - Bomb Tosser
487 - Vendors
490 - Half-Life Train
491 - Medkits (5)
492 - TIE INTERCEPTER
493 - Soda machines
494 - Truck with Semitrailor
495 - Truck with Semitrailor
500 - Shrubbery
501 - Train Attempt
502 - Breakable robot
503 - SuperGun
504 - Bedroom Unit
508 - Tank Effect
510 - Alien APC ver.1.1
511 - roof framework
512 - guided MG
513 - Bridge
514 - foldspade
515 - streetlamp 
516 - Transport Ship
517 - Mini Barracks
518 - Cammo Storage Tent
519 - CaretakersDesk