----------------- HES POSTING ----------------- Dear colleagues, I am looking for the historical origins of the idea of tradable permits. Any suggestions as to where to look (Coase is one source of course). By tradable permits, I refer the instrument promoted in environmental economics (pollution permits). But I am also referring to tradable fish quotas, tradable milk quotas,... And it also includes tradable birth licenses (Boulding), tradable inflation permits (Lerner), tradable immigration quotas (apparently a proposal made by Milton Friedman, but I do not have the source). Many thanks in advance, Yours sincerely, Axel Gosseries ------------ FOOTER TO HES POSTING ------------ For information, send the message "info HES" to [log in to unmask]