\documentclass{article}
\usepackage{geometry}
\usepackage{adjustbox}
\usepackage{array,booktabs}
\usepackage{pgffor}
\geometry{
paperheight=11in,
paperwidth=4.25in,
tmargin=1in,
bmargin=1in,
lmargin=.5in,
rmargin=.25in
}
\pagestyle{empty}
\def\name{Alan Munn}
\def\affiliation{Michigan State University}
\def\conference{Syntax and Variation: where are we now and where do we go from here?}
\begin{document}
\centering
\foreach \x in {1,...,3} {
\adjustbox{max totalsize={3in}{4in}}{\begin{tabular}{>{\centering\arraybackslash}p{2.5in}}