\documentclass[12pt]{amsart}
\usepackage[margin=1in,includefoot]{geometry}                % See geometry.pdf to learn the layout options. There are lots.
\geometry{letterpaper}                   % ... or a4paper or a5paper or ... 
%\geometry{landscape}                % Activate for for rotated page geometry
%\usepackage[parfill]{parskip}    % Activate to begin paragraphs with an empty line rather than an indent
\usepackage{graphicx}
\usepackage{amssymb}
\usepackage{epstopdf}
\DeclareGraphicsRule{.tif}{png}{.png}{`convert #1 `dirname #1`/`basename #1 .tif`.png}

%\title{White Paper Title}

%\date{}                                           % Activate to display a given date or no date

\begin{document}
%\maketitle

\begin{center}
{\Huge \bf White Paper Title}\\
White Paper Subtitle [Optional]
\end{center}

\vskip 3cm

\noindent {\bf Corresponding Author:}\\
Firstname M. Lastname   email@address.edu \\
Institution1\\
Postal Address\\
Country\\

\noindent Institution2\\
Postal Address\\
Country\\

\noindent {\bf Additional Authors:}
Firstname M. Lastname (Affiliation), Firstname M. Lastname (Affiliation), Firstname M. Lastname (Affiliation), …

\vfill
\pagebreak
\setcounter{page}{1}
\begin{center}
{\Huge \bf White Paper Title} \\
White Paper Subtitle [Optional]
\end{center}
\vskip 1.5 cm

White Papers can be up to three pages long (not including the cover page and references). For additional guidance on the White Paper format, content, and submission please visit the HST-TESS Advisory Committee’s website at:\\
https://outerspace.stsci.edu/display/HPR/HST-TESS+Advisory+Committee


Please submit the white paper as a PDF file via email to hsttess@stsci.edu 

\vfill
\pagebreak
{\bf \noindent References:}\\
{\em References do not count against the page limit}
\vfill
\end{document}  