Okay being the OCD completionist that I am. I am now on my third playthrough of Dead Money trying to get all 10/10 for this challenge.

Spoilers may follow......

I have just reached the casino with 6/10 the rest I believe can be triggered in the casino? Now I'd best just say that the last two attempts at this DLC the most I can manage is 8/10 for this challenge and I thought that I had left no stone unturned trying to get all 10/10.

So I thought that I would try and find a guide to see where I went wrong and what I was missing. Now it seems that (spoiler) when you are nice to Dean throughout and don't kill him at the theatre that you miss one of the histories because you can't confront him about the blackmail tape even though when you do the 'good' playthrough he pretty much tells you the same thing. I've played the 'good' playthrough everytime!!!!

So by letting Dean live is it impossible to get all the History Sake parts?

That still means that I'm missing one! Is there another speech check I must pass to find the missing 1?

(I know of the two terminals...one in the casino vault and one in the security office which will take me to 8/10 Dean would have taken me to 9/10)

http://fallout.wikia.com/wiki/History%27s_Sake

Read this and see if you got it all.

Yeah got all those apart from the Dean one as mentioned in my earlier post. I've used this site before I've even added to this page as well. Still there are only 9 on there I wonder what the 10th one is as I've got the rest (minus the Dean one because I followed the letting him live path)

Thanks however for replying to my post!

I wonder if it's possible to antagonize Dean into turning against you even if you were nice to him.

I have been frequently checking the wiki and it is still missing one of them.

I have searched everywhere

this is my 2nd time going through this DLC (going to make sure Dean doesn't die this time) and I have gotten all the Stashes and the Snowglobe
I am also going to try and get all the HoloRifle mods (found 1/3)

but this one terminal is annoying, I have searched the GECK to find it and all I can find is a script that only shows 8:

; Vars for History's Sake Challenge
short bFoundClinicNote2a
short bFoundETPersonalLog01
short bFoundETPersonalLog02
short bFoundETStatusReport
short bFoundGala02SuitsAreHereNote
short bFoundPoliceNote02a
short bFoundProtocolsNote
Short bFoundEBE

I really don't think that there is a 10th one or their is and it's glitched so we can't get this challenge.

Replying to a previous reply on here. Once you choose the 'let Dean' live no matter what you say to him you can't piss him off so that he attacks you once you get to the casino so you'll never get the challenge if you do! He will say the same thing though making me think that this part is glitched and the challenge will only unlock its part if you have the option of presenting the blackmail tape, choosing the Dean must die approach.

I would love to hear from someone who has this challenge as I don't think its possible (on third playthrough trying to get it!).