My guess is that the CH-46 that picked you up was from the 2 46's and 2 gunships that were sent everyday from Marble Mountain to Baldy to support the 7th Marines. They could have come from any of the three 46 squadrons:
262, 263, or 364. The gun cover would be provided by either 167 or 367. On the day of your med-evac 14 April 1970 you were talking to Scarface 36 Paul Pratt who was the gun cover lead so that was 367.

All you 46 crews check your log books, and see if you were flying the Baldy mission on 14 April 1970. I talked with Gerald on the phone. He lives in PA and would like to see the crew in Washington, DC in 2008 to thank them in person.

Medevac

That mission, if in daylight, was probably flown by what we called "Baldy Medevac."

It also could have been flown by HMM 161, call sign Cattlecall.

Gerald has talked on the phone with Pratt. It seems others were wounded so Gerald had to call in his own med evac, but not being a radioman he wasn't sure how to do it. He told me that Sarface 36 managed to talk him through it and get everyone out safe. I may be wrong, but I think HMM-161 had pulled out of 'nam by April 1970. I know they left a few months after I got to Marble end of Dec. 1969.

Mission 42

I believe that was Mission 42, LZ Baldy Re-supply and Medevac.

Update

My last flight with HMM 161 out of Marble Mountain was August 3, 1970, so it could have been HMM 161. To my recollection, they left for California just after that.

Of interest, my next flight out of Marble was August 6, 1970 with HMM 263. It did not take long to put us to work!

would like to know

I was a hospital corpsman with the 7th Marines Regimental Aid Station on LZ Baldy on the 14th of April, 1970. There were a lot of Marines that came through our outfit that were to critical to make the trip straight to Da Nang. Do you recall being dropped off there? If so, we have met! I was one of a group of Corpsmen and one Doctor that stabilized wounded Marines prior to them being medevaced to Da Nang.

Thank God it fell my lot to serve with the Marines and every chance I get I tell anyone that will listen about the superb job the Marine Aviators did to get us back home.

Semper Fi,

James Mitchell