For many years, the Frankfurt Investment Law Workshop – jointly organized by Rainer Hofmann (Frankfurt), Stephan Schill (Heidelberg), and Christian J. Tams (Glasgow) – has been a forum for the discussion of conceptual issues of international investment law. Previous workshops focused on International Investment Law and General International Law: From Clinical Isolation to Systemic Integration?<http://www.nomos-shop.de/Hofmann-Tams-International-Investment-Law-General-International-Law/productview.aspx?product=13754> (Nomos 2011), International Investment Law and Its Others<http://ilreports.blogspot.com/2012/09/hofmman-tams-international-investment.html> (Nomos 2012), Preferential Trade and Investment Agreements: From Recalibration to Reintegration<http://ilreports.blogspot.com/2013/09/hofmann-schill-tams-preferential-trade.html> (Nomos 2013), International Investment Law and Development: Friends or Foes?<http://ilreports.blogspot.com/2013/02/workshop-international-investment-law.html>, and International Investment Law and the Global Financial Architecture<http://ilreports.blogspot.com/2014/02/workshop-international-investment-law.html>. The next workshop, to be held March 13-14, 2015, will explore the role of history in the interpretation and application of international investment law. It will cover a wide range of issues, from debates about investment law’s imperial origins to the drafting history of the World Bank’s ICSID Convention. The program is here<http://www.gla.ac.uk/media/media_381580_en.pdf>. As in previous years, the workshop will bring together academics and practitioners and provide them with a forum for open and frank exchanges. If you are interested in participating, please contact Sabine Schimpf, Merton Centre for European Integration and International Economic Order, University of Frankfurt, RuW, Grüneburgplatz 1, 60323 Frankfurt am Main, Germany (S.Schimpf@jur.uni-frankfurt.de).