New Zealand Treasury Treasury Working Paper Series. Reserve Bank of New Zealand Economics Department Discussion Papers from 1997. U.S. Office of the Comptroller of the Currency Economic Analysis Department Working Papers. Some available in pdf format. World Bank's Policy Research Working Papers Arranged by subject category.
Numerical listings are available here .
Their Development Economics FTP Site contains full length papers by number up to 1820. Brookings Institution Papers by Economic Studies Scholars . Discussion Papers in International Economics . Bureau of Labor Statistics BLS Working Papers. Cato Institute Trade Policy Analyses and titles from their Policy Analysis Series.