Erasmus' colloquia were famous, and once upon a time were regularly studied by all students of Latin, as a guide to the spoken style of the language. This was important in university settings, where Latin was often the only shared language in what were often very international student bodies.
Index to Viri Inlustres Urbis Romae (INTERMEDIATE +)
This text by L'Homond is justifiably famous. It gives brief potted histories of various Roman personalities. Many of the stories from here reappear over and over again in the various Latin children's books, such as 'Ad Alpes'.
This is a Latin paraphrase - where the Latin is re-written and fleshed out where necessary to aid comprehension - this style of text is a useful intermediate text, and is worth listening to before approaching the original.
Pexenfelder's magnum Opus is a huge encyclopedia of knowledge. It should only be approached by a student after the material in the Vestibulum and Orbis Sensualium Pictus of Comenius are well and truly learned and assimilated - then Pexenfelder's further development of vocabulary will 'work' as a text. Without the knowledge you will need from the elementary Comenius texts, you will struggle with Pexenfelder. After learning Comenius first, you will find him a delight.
Pexenfelderis Apparatus Eruditionis Pars 2 3h 24m (INTERMEDIATE+)
Index to Pexenfelder
Elementa Chymiae 41m (INTERMEDIATE+)
This is one of the 'Latin technical Books'series, the idea being that you listen to material that you already have passing familiarity with, as this will help you develop your Latin. You are not listening to this text in order to learn Chemistry, after all!
Materia Medica ~Latin & English 1h 25m (INTERMEDIATE+)
This is a useful text, as it presents 'recipes' for making chemicals, and the formulation of these in the Latin is interesting. Think of this as a cookbook.
This is a fantastic book, and is one of the few Latin readers with an intensive focus on reported speech. Highly recommended. Once again, to benefit from this reader, it would be really helpful if you had first assimilated the vocabulary in Comenius' Vestibulum and the Orbis Sensualium Pictus.