1. Johannes Braams. Babel, a multilingual style-option system for use with LaTeX’s standard document styles. TUGboat, 12(2):291–301, 1991. The babel package was originally a collection of document-style options to support different languages. An update was published in TUGboat, 14(1):60–62, April 1993. https://tug.org/TUGboat/tb12-2/tb32braa.pdf https://tug.org/TUGboat/tb14-1/tb38braa.pdf
2. David Carlisle. A LaTeX tour, Part 1: The basic distribution. TUGboat, 17(1):67–73, 1996. A “guided tour” around the files in the basic LaTeX distribution. File names and paths relate to the file hierarchy of the CTAN archives. https://tug.org/TUGboat/tb17-1/tb50carl.pdf
3. —. A LaTeX tour, Part 2: The tools and graphics distributions. TUGboat, 17(3):321–326, 1996. A “guided tour” around the “tools” and “graphics” packages. Note that Lamport’s manual [25] assumes that at least the graphics distribution is available with standard LaTeX. https://tug.org/TUGboat/tb17-3/tb52carl.pdf
4. —. A LaTeX tour, Part 3: mfnfss, psnfss and babel. TUGboat, 18(1):48–55, 1997. A “guided tour” through three more distributions that are part of the standard LaTeX system. The mfnfss distribution provides LaTeX support for some popular Metafont-produced fonts that do not otherwise have any LaTeX interface. The psnfss distribution consists of LaTeX packages giving access to PostScript fonts. The babel distribution provides LaTeX with multilingual capabilities. https://tug.org/TUGboat/tb18-1/tb54carl.pdf
5. —. XMLTEX: A non validating (and not 100% conforming) namespace aware XML parser implemented in TeX. TUGboat, 21(3):193–199, 2000. XMLTEX is a an XML parser and typesetter implemented in TeX, which by default uses the LaTeX kernel to provide typesetting functionality. https://tug.org/TUGboat/tb21-3/tb68carl.pdf