As you do the quest Secrets of the Talonpriests http://www.wowhead.com/?quest=11005 This drops off of Talonpriest Ishaal.
Gives 75 rep.
Quest
Ishaal's Almanac
A World of Warcraft quest in Terokkar Forest. Facts and objectives from the current retail game data.
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You hand in this quest at :64.1,66.9
Actually it's 82.5 rep for humans. WoW has a floating point value internally for reputation. You can see this if you repeatedly turn in Coilfang Armaments which gives 75 rep or as a human 82 and 83 alternating.
Quest facts
The client quest POI data records no map location for this quest, so no map is shown.
Check whether you have already completed this quest
in-game: /run print(C_QuestLog.IsQuestFlaggedCompleted(11021))
Description
This mysterious tome was on Talonpriest Ishaal's body. It contains arcane symbols and charts of celestial bodies beyond your comprehension. All writing is in a language you don't understand; likely an ancient version of the arakkoa written tongue. Perhaps you should bring this to Sky Commander Adaris.
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Reward details
Reputation: Sha'tari Skyguard +75
An airborne military force created by Shattrath City to deal with the threats that loom in the highest reaches of Outland.
Reputation group: Shattrath City.
Other quests in Terokkar Forest that reward Sha'tari Skyguard reputation: World of Shadows (+250), Secrets of the Talonpriests (+250), More Shadow Dust (+150), Fires Over Skettis (+350), Countdown to Doom (+75), A Shabby Disguise (+150).
Item facts are the current retail client’s (ItemSparse); the specialisations for a pick-one item are the ones the Blizzard quest API lists; faction and currency text is the client’s own. Lowest listed price = the US commodity auction house now.