# [Tex/LaTex] PDF letterhead as document background

My institution's letterhead is available as a PDF file. The PDF is not just of the logo (to be placed in a corner), but of the entire page. Is it possible to make this PDF the background of the first page of my document?

You can accomplish this with the wallpaper package. It has many options for creating background images that are tiled, centered, and scaled, on every page or only specific ones. In your case if the letterhead is contained in lh.pdf then you simply need

\documentclass{article}
\usepackage{wallpaper}
\ULCornerWallPaper{1}{lh.pdf}
\begin{document}

The key command in this case is of course \ULCornerWallPaper{<scale>}{<file>} that places the image contained in <file> in the upper-left corner, scaled by a factor of <scale>.