GlobeMaster Military Aviation Site  This site is an excellent place to visit and has lots of links and information.

1st Aviation Brigade:  This site gives a listing of all unit Web sites of aviation companies. It also has lots of information on army aviation.

International Bird Dog Association This site is dedicated to owners and pilots of the Bird Dog Aircraft.

O-1 Birddog Company WEB site:

183rd RAC Richard Kloppenburg  This site is dedicated to the original bunch of 183rd Pilots to operate out of Dong Ba Thin and is a sister site of this one. The site covers the early years of the 183rd.

Black Ace 21st RAC This site is dedicated to the men and officers of the 21st RAC.

Aloft 74th RAC This site is dedicated to the men and officers of the 74th. The 74th RAC was initially assigned to the 145th Combat Aviation Battalion and in Feb. 1968 to the 210th CAB, 12th AVN Group, and always part of the 1st Aviation Brigade. The 74th was organized in 1965 and stood down in 1972.

Non Stop 184th RAC:  The 184th RAC flew observation missions in support of US and Vietnamese forces during the Vietnam Conflict. The unit flew the O1-G Birddog single engine, two place, high wing aircraft. The missions included conducting artillery fire missions, directing air strikes, and general reconnaissance.

Pterodactyls 185th RAC This is a web page dedicated to the officers and men of the 1st Avn Brigade, 223rd Avn Bn, 185th Recon Airplane Co. "Pterodactyls" based at Camp Coryell, Ban Me Thout, Republic of Vietnam, 1967-71. The 185th was a fixed (starched) wing unit flying the old Cessna O-1 Birddog. 

Swampfox 199th RAC Dedicated to the men who flew and supported the 199th Recon Airplane Company in the Delta region of Vietnam.

Headhunters 219th RAC:  Dedicated to the men who flew with the 219th Headhunters.

Catkiller 220th RAC This unit is dedicated to the men who supported and flew the O-1 Bird Dogs. The Catkillers operated out of Phu Bai, Hue,Da Nang, Dong Ha, and Quang Nagi

Shotguns 221st Aviation Company This site is dedicated to the men who served from its activation on 23 March 1965 to its deactivation 10 October 1971.

Hawk Eyes 203rd RAC: no website info.

Warriors 73rd RAC: no website info.

Night Hawks 131st RAC: no website info.