This jump jacket is definatly my favorite! It belonged to '1st Lt. James F. Dunham', 'Jr. O-1825336', who was a member of 506 1st Bn. A Co.
I am still researching James and i think that he jumped in Son, although i am not 100% sure. I got this jacket with the Dutch Lanyard on it so who knows. I hope i get a positive reply on my request at the National Archives. Dunham was probably a replacement, and therefor i think that Operation Market Garden was his first war experience, but like i said, i am not sure.
Don Burgett's reply regarding Dunham. Probably NOT what you were hoping to hear... 
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Lt. Dunham came to us, "Able Company, 506, 101st Abn. Div. January 1945 as a newly arrived replacement in Europe after Patton's 4th Armored broke through the German perimeter in Bastogne. This was long after Operation Market Garden was over, Nov. 28, 1944. It would have been impossible for Lt. Dunham to have jumped into Holland in Operation Market Garden. The Orange Lanyard was not and is not a Divisional award, it was a awarded under Ministerial Decree No. P-203, 20 September 1945 by the Netherlands Minister of War by special decree: That each member of the 101st Airborne Division, United States Army, who took part in the operations in southern part of the Netherlands in the period from 17 September to 28 November 1944 is authorized to wear the Orange Lanyard of the Royal Netherlands Army.
Lt. Dunham made serious and irrational command decissions during the short time he was with Able Company that jeopardized the lives of the men in his command. As soon as it was possible the men of Able Company petitioned Regimental Command to relieve Lt. Dunham as being unfit to command in combat.
When the war ended we were in Bruck, Austria and celebrated the end of the war with a drinking party within the company. Lt. Dunham was not invited to our party but entered our billit, loudly declaring "The war is over" and fired a shot with his .45 cal. 1911 pistol into the ceiling, wounding a paratrooper sitting at a table upstairs writing a letter home to his mother that the war was over and he had made it safely through.
Lt. Dunham was transfered that same night out of Able Company, and evidently out of the Div. altogether with no word to where he was transfered.
Donald R. Burgett
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"