I can find very little information about this attack. I am looking for the names of people present, those that died, details of the attack, etc.
I just ran a search on the Vietnam Veterans Memorial Wall site for US casualties between 6-7 February 1965 (the date of the attack on Camp Holloway).
The search returned 10 dead during that time-frame. Of those, one died in a vehicular accident elsewhere, and one was a downed naval aviator. This page says that 8 US servicemen were killed in the Camp Holloway attack.
So, from looking at the casualty list, and the units stationed at Holloway, I believe the casualties were:
None of those names have exact death locations, but all are listed as KIA in South Vietnam, and from their unit designations all were plausibly stationed at Camp Holloway.
I hope that helps.
Edit: this seems to be a pretty solid firsthand account of the history of Camp Holloway from someone who was stationed there during the war. It also has some interesting detail on the attack of 6-7 February, including scans of official journal entries by a captain in the 52nd Aviation Battalion about the attack: part 1 / part 2 / part 3.
That site also has a list of casualties at Holloway which appears to confirm 7/8 of the names I listed, and includes another (Pvt Norman Ray Garrett, 52nd Aviation Battalion) that I didn't find on the first search. The Camp Holloway site lists his date of death as 7 February 1965, but the date on the Vietnam Veterans Memorial is 15 February — not sure why that is, but it could be either that he was wounded in the attack and died later, or a mixup with military records. The name not listed on that site is the MACV advisor, SP5 Pyle — but this post from one of his relatives confirms he died at Pleiku. So it appears the total number of casualties was 9, not 8.