{\LaTeX\ 508\,--\,creating accessible \PDF{}s} {Ross Moore} {Authoring documents that are accessible to people with disabilities is not only the morally correct thing to be doing, but is now required by law, at least for \acro{U.S.} Government offices and agencies, through the revised Section 508 of the \acro{U.S.} Disabilities Act (2017). It is likely to eventually become so also for any affiliated institutions, such as universities, colleges and many schools. For mathematics and related scientific fields, it thus becomes imperative that we be able to produce documents using \LaTeX\ that conform to the accessible standard \acro{ANSI}\slash \acro{AIIM}\slash \acro{ISO}~14289-1:2016 (\acro{PDF/UA-1}). This is far more rigorous than standard \PDF, in terms of capturing document structure, as well as all content associated with each particular structural element. In this talk we show an example of a research report produced as \acro{PDF/UA} for the \acro{U.S.} National Parks Service. We illustrate several of the difficulties involved with creating such documents. This is due partly to the special handling required to encode the structure of the technical information such as appears on the title page, and inside-cover pages, as well as tabular material and images throughout the body of the document. But there are also difficulties that are due to the nature of \TeX\ itself, and the intricacy of \LaTeX's internal programming.}