I read a wonderful book by Richter on the monastery at Bobbio, Lombardy, from the early Seventh to the late Eighth centuries. I present it below. But the conclusion which may be drawn is that with the wealth of documents in the Library and the growth of them one could readily deduce that the "Dark Ages" was an artifact of the Renaissance man. In fact the total lack of any comments by Gibbon in his diatribe against Catholics totally ignores this.
Bobbio, by Richter, is an exceptionally well written presentation of the
 history of the monastery founded by Columbanus in the early 7th 
century. Richter provides a history of the three hundred years, from 
early 600s through the late 800s and deals directly with the original 
sources in a smooth and accessible manner. His writing style is clear 
and fluid and he provides the history of Bobbio in the context of the 
surrounding historical settings. It is in many ways an academic tour de 
force. Richter takes a some what complex set of issues from the 7th 
through 9th centuries, using the original sources, and makes them flow 
and readable. As I will comment upon, having some solid secondary school
 Latin is always a help but not a necessity.
Bobbio was in 
Lombard territory when founded by Columbanus and at the time the 
Lombards were Arian Christians, simply they did not believe in the 
Trinity or the divinity of Christ. Columbanus had been "expelled" from 
the Merovingian territories, most likely due to his battles with Queen 
Brunhilda, and having left Frankish lands he settled here. It is then 
the tale of this monastery from the time of Columbanus that Richter so 
admirably tells.
The book is concise, some 188 pages, and it is 
structured to basically follow the history. The first three chapters 
present the time of Columbanus and his immediate legacy. Richter 
interspersed his text with excerpts from the originals in 7th century 
Latin (it starts on p 19 with the writ of exemption). This is actually 
more useful than most would expect. I found that my Latin, French, and 
Italian were adequate to handle the inserts but at the same time reading
 them does provide a sense of how the language was halfway between 
Cicero and the Scholastics.  One can see the mild local differences and 
the structure is evolving but the inclusion is quite helpful.
Richter
 does cover the key points concerning Bobbio, especially it exemption 
from control by the local bishop, which I assume in the 7th century was 
less of an issue than in the 9th.  Furthermore the text, in the first 
three chapters, is focused on Bobbio and much less of Columbanus. There 
have been several recent works on Columbanus, none as scholarly as 
Richter, but it would possibly have been useful if Richter had provided a
 bit more background from his perspective on Columbanus.
Chapter 4
 talks of the Scriptorium in the 7th century. This is a wonderful 
chapter and it details both the documents from that time and the ones 
from earlier upon which the documents were overwritten. The discussion 
on p 73 of the overwriting on Ulfila's Gothic translation of the Bible 
is intriguing. It would be interesting to hear more just of that 
discovery alone. The discussion here is quite complete and does set out 
the controversies and attempts to resolve them. What is interesting and a
 lingering question is that we see the strong and driving influence and 
competence of the Irish monks but one wonders just how they came by 
this. This was not a task of Richter but after reading the volume in 
toto is screams for an answer.
Chapter 5 speaks somewhat of the 
century where there were recorded abbots. The discussion on pp 92-93 is 
of interest in that it presents the potential lingering Irish influence.
 One of the questions that is not addressed to any significant degree 
was the openness of the abbey. The Frankish abbeys were allegedly open 
to lay people, and to some degree they were seen as institutions of 
learning, not just classic closed abbeys like those of the Benedictines.
 If this were the case, and given the extent of the Scriptorium in 
non-religious content, one may wonder.
Chapter 7 discusses the 
changes during the era of Charlemagne. Chapter 8 presents the economy of
 the monastery. There is exceptionally complete detail which is 
presented in a fresh and clear manner.
Chapter 9 was of most 
interest to me. It was the Library in detail in the 9th century. On pp 
154-156 is a details presentation of the key contents and the mix of 
documents is intriguing. This Chapter by itself if of substantial value.
The remaining chapters provide additional detail and especially the details regarding the movement of the remains of Columbanus.
This
 book is superbly researched, is readable while being academically of 
the highest caliber. This provides a well done addition not only to the 
works regarding Columbanus but also to the early Middle Ages.
For anyone interested in this period, no matter where in Europe the interest may be, this is a highly recommended work.
