\documentclass{article}
\usepackage[margin=0cm]{geometry}
\usepackage{pdfpages}
\begin{document}
\pagestyle{empty}
\includepdf[pages={1}, nup=1x1]{ handout1-mini.pdf }
\includepdf[pages={1}, nup=1x1]{ handout-bounty.pdf }
\end{document}