Here are some of the sources and materials I've been collecting:
Andrelinus. You can read about
Andrelinus's Disticha here.
Appendini. You can read about
Appendini's Disticha here.
Bornitius. I included some information about Bornitius in this blog post about Here is a blog post about
Camerius and his distichs, but I need to write up a separate blog post about Bornitius and I'm pretty sure there is another book of Bornitius distichs I need to transcribe.
Camerarius. Here is a blog post about
Camerius and his distichs.
Campion. You can find the
epigrams of Campion at Dana Sutton's website.
Cato. Here is a blog post about
Cato's distichs and the sources I used.
**Cato Bernardinus. I'm working right now on transcribing
Cato Bernardinus.
Catullus. The
poems of Catullus can be found at the Latin Library.
Cornelisz.
Pieter Cornelisz Hooft's Emblemata amatoria (1611) is part of the Emblem Project Utrecht.
Dunbar. You can find the
epigrams of Dunbar at Dana Sutton's website.
Epitaphia. I just have items here from the
Latin Library collection; I need to research this topic in more detail.
Fabricius. You can read about
Fabricius's Poetae Singulis Distichis Descripti here. This book also contains verses by Carchesius, Hessus, and Vicedominus.
Florilegium Gottingense. I used this edition at Google Books:
Voigt: Florilegium Gottingense.
Gartner. I used this Google Book as my source:
Gartner: Dicteria Proverbialia. (Did I finish harvesting from Gartner? I don't think I finished; need to check.)
Glandorpius. Here is information about
Glandorpius's Distichorum liber.
Godfrey of Winchester. You can find the
epigrams of Godfrey of Winchester at the Latin Library site.
Heinsius. Daniël Heinsius's
Quaeris quid sit Amor (c. 1601) and his
Ambacht van Cupido (1613) at the Emblem Project Utrecht.
Kochanowski. You can find
Kochanowski's Latin works at Google Books.
Martial. Here is a
blog post about Martial and the sources I used.
Moker. You can read about
Moker's Decalogus metricus et paraenetica disticha here.
Muretus. You can find the
distichs of Muretus in this edition of Publilius Syrus.
Nihus. You can read more about
Nihus's Epigrammata Disticha here. So far I have only transcribed from Book 1, which contains anonymous poems, Aslepiadius, Asemnius, Augustinus, Austonius, Basilius, Claudianus, Ennius, Euphorbius, Eusthenius, Hilasius, Iulianus, Maximianus, Palladius, Pentadius, Petronius, Pompeianus, Vitalis and Vomanus. I have not done the later sections, only the ancient sections.
Östnordiska. You can find
Låle's Östnordiska och latinska medeltidsordspråk at Google Books.
Oudin. You can read about
Oudin's Silva distichorum moralium here.
Owen. Here is a
blog post about Owen and his distichs.
Rollenhagen. Here is a
blog post about Rollenhagen and his emblems.
Scaliger. You can find the iambic
distichs of Scaliger in this edition of Publilius Syrus.
Stradling. You can find
Stradling's Latin poetry at Dana Sutton's website.
Thomas More. I have a blog post about
Thomas More and his Latin poetry here.
Verinus. Here is a
blog post about Michele Verinus and his poems.
Vlaenderen. Here is information about
Van Vlaenderen's Epigrammata Miscellanea.
Wegeler. I love this book! I used the edition at Google Books:
Wegeler: Philosophia Patrum.
Zacher. Here is the Google Book that I used:
Zacher: Altfranzösische Sprichwörter.