From the ASA permission form sent to authors when a publisher wants to reprint an article that appeared in an ASA journal:
Prior to 1999, ASA policy on revenue sharing with its authors stated that proceeds will be shared equally by the author(s) of the article and the ASA as copyright holder. For articles published prior to 1999, the ASA will collect all fees and will disburse one half of these receipts to authors upon collection from the requestor, unless you agree to donate your share to the ASA. For articles published in 1999 and later, ASA retains all fees received for reprint permission requests. (This applies to journal articles only).