Regarding the source of the ontologies in this folder, in alphabetical order:

- adolena.owl: This is an *experimental* ontology to demonstrate the proof-of-concept of OBDA with a real database, as early as 2008. Its creators are Ronell Alberts, Aurona Gerber, and Maria Keet. We didn’t put any licencing on it explicitly, but assume the usual: you can use and adapt etc. 
It has a related paper:
C. Maria Keet, Ronell Alberts, Aurona Gerber, and Gibson Chimamiwa. Enhancing web portals with Ontology-Based Data Access: the case study of South Africa's Accessibility Portal for people with disabilities. In Catherine Dolbear, Alan Ruttenberg, and Uli Sattler, editors, Proceedings of the Fifth OWL: Experiences and Directions (OWLED 2008), volume 432 of CEUR-WS, 2008. Karlsruhe, Germany, 26-27 October 2008.

- AfricanWildlifeOntologyX: Maria Keet made most of the AWO versions, except AfricanWildlifeOntology.xml (Lapalme), AfricanWildlifeOntologyAF (Lauren Sanby) and  AfricanWildlifeOntologyZU (Takunda Chirema); see OverviewDifferencesBetweenTheAWOversions for details and the ontology annotations. They’re available under a CC-BY licence (given that now it seems to be needed to specify these things).
For a description of these tutorial ontologies, or if you want to use them and cite them, please use:
Keet, CM. The African Wildlife Ontology tutorial ontologies: requirements, design, and content. Arxiv Technical Report 1905.09519. 23 May 2019. https://arxiv.org/abs/1905.09519.

- bfo.owl. This is is BFO 2.0 sourced via https://github.com/bfo-ontology/BFO/wiki. Ontology imports may be theoretically nice, but practically it is too disruptive, since owners of the imported ontology may change the ontology’s location (which happened with BFO v1.1 that AWO v3 and 3a imported as well as earlier with the owl AWO v2/2a and DOLCE), causing it to lose the alignments. Hence, to be sure to see the right answer, download this one locally and choose “import from local file” when opening AWO v3b.

- ontoclean-dl.owl was created by Chris Welty, and uploaded here because the original was not available anymore at the URL indicated. 
It is related to the following paper:
Welty, C. A. (2006). OntOWLClean: Cleaning OWL ontologies with OWL. In Bennett, B. and Fellbaum, C., editors, Proceedings of the Fourth International Conference on Formal Ontology in Information Systems (FOIS’06), Baltimore, Maryland, USA, November 9-11, 2006, volume 150 of Frontiers in Artificial Intelligence and Applications, pages 347-359. IOS Press.

- OntocleanX.owl are the tutorial ontologies for the OntoClean tutorial available at https://people.cs.uct.ac.za/~mkeet/OEbook/ and in the appendix of v2 of the OE book.  

- phonepoints.owl: by Maria Keet. I didn’t put any licencing on it explicitly, but assume the usual: you can use and adapt etc.
It is based on the UML diagram in the following paper:
D. Berardi, D. Calvanese, and G. De Giacomo. Reasoning on UML class diagrams.Artificial Intelligence, 168(1-2):70-118, 2005.

- pizza.owl is the original 2005 version. It has a related paper:
AL Rector, N Drummond, M Horridge, L Rogers, H Knublauch, R Stevens, H Wang, and C. Wroe, Csallner. OWL pizzas: Practical experience of teaching OWL-DL: Common errors & common patterns. In Proceedings of the 14th International Conference Knowledge Acquisition, Modeling and Management (EKAW'04), vol. 3257 of LNCS, pages 63-81. Springer, 2004. 

- university.owl was taken from http://owl.man.ac.uk/2005/07/sssw/university.html. Maria Keet made the derivatives. computerscience.owl is related to it, but I couldn’t find the source (if it’s you, please let me know). licence unclear.