Hi can anyone point me in the right direction in regards to where I can get an unabridged book on the First Vatican Council?
If you mean the documents from Vatican I, they’re likely only available online, or …
Well, the version online:
There is a text of all the documents from all the Ecumenical Councils:
It’s a bit on the expensive side. I don’t think you’ll get just Vatican I documents by itself. But someone else might have knowledge that I don’t.
See here for The Vatican Council from its opening to its prorogation : official documents, diary, lists of bishops etc. etc. etc (1870)
Since all the documents are now in the public domain, you can upload the 224-page PDF of all those documents to a site like this one, and get a nice hardcover edition for under $30. Some of the text from the documents may be a bit small in the 5x8" book, so you may want to splurge for an 8x10" book, which will run you $65 to 70.