\documentclass{article}
\usepackage{pdfpages}
\begin{document}
%\includepdf[pages=3]{S0.pdf}
\includepdf[pages={1-},angle=0,landscape]{L13.pdf}
%rotateoversize
\includepdf[pages={1-}]{L13classnotes20170303.pdf}
\includepdf[pages={1-},angle=0,landscape]{L14.pdf}
%rotateoversize
\includepdf[pages={1-}]{L14classnotes20170307.pdf}
\includepdf[pages={1-},angle=0,landscape]{L15.pdf}
%rotateoversize
\includepdf[pages={1-}]{L15classnotes20170310.pdf}
\includepdf[pages={1-},angle=0,landscape]{L16.pdf}
%rotateoversize
\includepdf[pages={1-}]{L16classnotes20170314.pdf}
\includepdf[pages={1-},angle=0,landscape]{Part3Quiz.pdf}
\end{document}
