diff --git a/AUTHORS b/AUTHORS
index 31b837f8d..2dd6e1afe 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -55,3 +55,11 @@ In the subdirectory threads, rewrote:
     coop-threads.c  coop.c          mit-pthreads.c  threads.c
     coop-threads.h  fsu-pthreads.h  mit-pthreads.h  threads.h
 Many other changes throughout.
+
+Mark Galassi:
+Designed and implemented the high-level libguile API (the @code{gh_}
+interface), based largely on the defunct @code{gscm_} interface.  In the
+subdirectory gh, wrote:
+gh.c             gh_eval.c        gh_io.c          gh_test_c.c
+gh.h             gh_funcs.c       gh_list.c        gh_test_repl.c
+gh_data.c        gh_init.c        gh_predicates.c