I co-edit the Econometric Society Monograph Series. I handle economic theory monographs and Rosa Matzkin handles theoretical and applied econometrics monographs.
Details for submission of manuscripts for the monograph series can be found at http://www.econometricsociety.org/monosubmit.asp.
Please email me if you have any questions or a manuscript that might be appropriate.
To submit to Econometrica, please follow the instructions at http://www.econometricsociety.org/submissions.asp
George J. Mailath