I went to the library and checked a couple of the books mentioned above:
Maddalo, S: Il De Balneis Puteolanis Di Pietro Da Eboli : Simbolo e realtà Nella Tradizione Figurata, Biblioteca Apostolica Vaticana, 2003.
Kauffmann, "The Baths of Pozzuoli: A Study of the Medieval Illuminations of Peter of Eboli’s Poem". Oxford: Bruno Cassirer, 1959.
It was a quick visit and I could not take the books home, so I only have superficial impressions. Maddalo is very much focussed on the Anglica manuscript, and seems to be more concerned with the illustrations, their style and origin.
Kauffmann is a shorter work, but it is extremely informative.
In particular, he provides a list of manuscripts. Those illustrated are:
1. Rome, Angelica ms 1474 [1275ca] (some illustrations on You are not allowed to view links.
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2. You are not allowed to view links.
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3. You are not allowed to view links.
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4. You are not allowed to view links.
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5. You are not allowed to view links.
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6. St. Gall Mettler Beuer [1400 ca] (now You are not allowed to view links.
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7. You are not allowed to view links.
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8. You are not allowed to view links.
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9. Edinburgh Univ. Ms 176 [1450 ca] (only a few images available online You are not allowed to view links.
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10. Milan Ambrosiana Ms. I 6 Inf [1471] (a couple of illustrations You are not allowed to view links.
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Kauffmann also mentions a XVI Century ms with illustrations derived from this tradition:
* Naples, Società Napoletana di Storia Patria, Ms.XX C.5 [1520 ca]
We can also add the above mentioned:
* You are not allowed to view links.
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* Parma, Codice Palatino 236 [1325 ca]
Finally, I think this could also be illustrated (the text is the same Italian translation as BAV Ross.):
* Naples, Biblioteca Nazionale, ms. XIII. C. 37 [1340 ca?]
This manuscript was published in:
Andria, M., "L' antica scienza campana del benessere: i Bagni di Pozzuoli e la Regola Salernitana : dal Ms. XIII.C.37 della Biblioteca nazionale di Napoli", 1991 - I will check this book next time I visit the library.
Kauffmann also provides a "stemma" of the tradition (for some reason, the Edinburgh ms is not included). "Paris" is Fr.1313 and "Mettler" is Morgan G74. As you can see, no manuscript derives from the older one at the Angelica Library: there seem to be several independent traditions originating from the lost archetype.