Text etched out of historical document, I need help re-exposing the ink. Some areas have been written over.

Question

I have a really interesting dilemma that I really need some assistance with.
I took a 8 panoramic photographs of 8 individual lines of text and I need some help to re-expose the old words.
The images can be downloaded from my flickr album.
The photos I have posted show written text from an 18th century MIT professor's journal. The professor was fired and historians would like to know why. The only problem is... the professor had etched out crucial words/names to keep us from knowing what was originally written. In some cases, he etched out old words and rewrote newer words in there place.
Please download and play with the image and let me know if you have been successful. -or- let me know what I have to do to pull out the ink.
Thank you all so much!
-Mark
[email protected]

Answer 1

Thank you for your response. 
The image was shot with the Canon 6D in conjunction with our Macropod photomacrography system and the images are shown as they exist on the page. 
I work closely with the researcher who needs to interpret this journal and I know that the faded ink has been neither transferred from the next page -or- stamped from the previous for two reasons.
1) The images are very high in resolution.  If you download the full size image, you can see down the fibers in the paper.  The ink is only shown on the surface of the fibers (this indicates a stamp as you suggest).
2) It is not a stamp or a transfer because we can look at what is written on the previous and following pages and they do not match the writing.  We also see the words slanted as they should be.
This author is notorious for etching out ink.  He even describes his technique in century old texts in Cambridge.  He used a tool made of graded glass and and a pick in conjunction with minor amounts of a solution.  However, some remnant ink still exists where it has been removed.  Furthermore, he only removed words that contain critical information such as names.  In some cases, there is also a small imprint superimposed onto the marks from the etching.  However, 200 years of rebound was enough to make this extremely difficult to see.
If you can convince yourself that the subtle ink splotches are, in fact, words that have been removed from the page that is gown (as we have convinced ourselves over the past year after hours of examination) you will help us achieve our goal.
I've used techniques such as color-inversion, leveling, extreme contrast, but I have limited photoshop knowledge about how to best analyze and process these images in order to achieve the solution.
I thank you for your continued help and I would be very happy to see what you can ultimately deduce.