diff --git a/Makefile b/Makefile
index 851d2c5..7a1e668 100644
--- a/Makefile
+++ b/Makefile
@@ -27,6 +27,12 @@ s48-srcs := $(shell find s48 \
 s48-docs := $(shell find s48 \
               -mindepth 2 \
               -name README)
+s48-authors := $(shell find s48 \
+                  -maxdepth 2 -mindepth 2 \
+                  -name AUTHORS)
+s48-blurbs := $(shell find s48 \
+                -maxdepth 2 -mindepth 2 \
+                -name BLURB)
 
 scsh-interfaces := $(shell find scsh \
                      -maxdepth 2 -mindepth 2 \
@@ -42,10 +48,16 @@ scsh-srcs := $(shell find scsh \
 scsh-docs := $(shell find scsh \
               -mindepth 2 \
               -name README)
+scsh-authors := $(shell find scsh \
+                  -maxdepth 2 -mindepth 2 \
+                  -name AUTHORS)
+scsh-blurbs := $(shell find scsh \
+                 -maxdepth 2 -mindepth 2 \
+                 -name BLURB)
 
 s48-targets := s48-interfaces.scm s48-packages.scm
 scsh-targets := interfaces.scm packages.scm
-targets := $(s48-targets) $(scsh-targets)
+targets := $(s48-targets) $(scsh-targets) DETAILS
 
 .PHONY: all s48 scsh
 all : s48 scsh
@@ -64,6 +76,9 @@ interfaces.scm : $(s48-interfaces) $(scsh-interfaces) build/header.scm
 packages.scm : $(s48-packages) $(scsh-packages) build/header.scm
 	build/xpackages.scm packages.scm build/header.scm $(s48-packages) $(scsh-packages)
 
+DETAILS : $(s48-authors) $(s48-blurbs) $(scsh-authors) $(scsh-blurbs)
+	build/details.scm
+
 .PHONY : install uninstall
 install : s48 scsh
 	$(INSTALL) -d $(pkglibdir)
diff --git a/README.contrib b/README.contrib
index b6de270..6e6bf99 100644
--- a/README.contrib
+++ b/README.contrib
@@ -2,13 +2,21 @@ GUIDLINES FOR CONTRIBUTORS
 
 ADDING A NEW LIBRARY
 
+0. This library only accepts code with the modified bsd license in the
+file COPYING. Add your name to the file COPYING.
+
 1. Create a new subdirectory of s48 or scsh for your library. Only
 touch files in your library's tree.
 
 2. Your library's tree should have at least these files:
+  AUTHORS -- a list of your library's authors.
+  BLURB -- a one or two line description of your library. It should
+  start with the name of your library's directory followed by a colon.
+  README -- a text file documenting your library.
   interfaces.scm -- the interfaces defined by your library.
   packages.scm -- the packages defined by your library.
-  README -- a text file documenting your library.
+
+Our administration and the build systems depends on these files.
 
 3. Currently, the install script only installs ".scm" source files and
 README documentation files.
diff --git a/build/details.scm b/build/details.scm
new file mode 100755
index 0000000..ea498c6
--- /dev/null
+++ b/build/details.scm
@@ -0,0 +1,57 @@
+#! /bin/sh
+exec scsh -o filenames -s "$0" "$@"
+!#
+
+;;; details.scm
+;;;
+;;; This file is part of the Scheme Untergrund Library.
+
+;;; Copyright (c) 2003 by Anthony Carrico
+;;; For copyright information, see the file COPYING which comes with
+;;; the distribution.
+
+(define s48-dirs
+  (run/strings (find s48
+                     -maxdepth 1
+                     -mindepth 1
+                     -type d
+                     ! -name CVS
+                     ! -name rt-modules)))
+
+(define scsh-dirs
+  (run/strings (find scsh
+                     -maxdepth 1
+                     -mindepth 1
+                     -type d
+                     ! -name CVS)))
+
+(define entry
+  (lambda (dir)
+    (with-current-input-port
+     (open-input-file (string-append dir "/BLURB"))
+     (let loop ()
+       (let ((ch (read-char)))
+         (if (eof-object? ch)
+             (values)
+             (begin
+               (write-char ch)
+               (loop))))))
+    (display "Authors: ")
+    (with-current-input-port
+     (open-input-file (string-append dir "/AUTHORS"))
+     (let loop ()
+       (let ((ch (read-char)))
+         (if (eof-object? ch)
+             (values)
+             (begin
+               (write-char ch)
+               (loop))))))
+    (newline)))
+
+;; Create the details file from the AUTHORS and BLURB files.
+(with-current-output-port
+ (open-output-file "DETAILS")
+ (display "S48 LIBRARIES\n\n")
+ (for-each entry s48-dirs)
+ (display "SCSH LIBRARIES\n\n")
+ (for-each entry scsh-dirs))
diff --git a/s48/args-fold/AUTHORS b/s48/args-fold/AUTHORS
new file mode 100644
index 0000000..aaa0f16
--- /dev/null
+++ b/s48/args-fold/AUTHORS
@@ -0,0 +1 @@
+Anthony Carrico
diff --git a/s48/args-fold/BLURB b/s48/args-fold/BLURB
new file mode 100644
index 0000000..192f15c
--- /dev/null
+++ b/s48/args-fold/BLURB
@@ -0,0 +1 @@
+args-fold: a program option processor (SRFI-37).
diff --git a/s48/concurrency/AUTHORS b/s48/concurrency/AUTHORS
new file mode 100644
index 0000000..2df1b32
--- /dev/null
+++ b/s48/concurrency/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler
diff --git a/s48/concurrency/BLURB b/s48/concurrency/BLURB
new file mode 100644
index 0000000..a0a2576
--- /dev/null
+++ b/s48/concurrency/BLURB
@@ -0,0 +1 @@
+concurrency: semaphores, with-lock.
diff --git a/s48/continuation-data-type/AUTHORS b/s48/continuation-data-type/AUTHORS
new file mode 100644
index 0000000..c51381e
--- /dev/null
+++ b/s48/continuation-data-type/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler, (credit to Marc Feeley)
diff --git a/s48/continuation-data-type/BLURB b/s48/continuation-data-type/BLURB
new file mode 100644
index 0000000..157fd56
--- /dev/null
+++ b/s48/continuation-data-type/BLURB
@@ -0,0 +1,2 @@
+continuation-data-type: encapsulates continuations into a
+data type.
diff --git a/s48/krims/AUTHORS b/s48/krims/AUTHORS
new file mode 100644
index 0000000..32d2642
--- /dev/null
+++ b/s48/krims/AUTHORS
@@ -0,0 +1 @@
+Rolf-Thomas Happe
diff --git a/s48/krims/BLURB b/s48/krims/BLURB
new file mode 100644
index 0000000..953ea76
--- /dev/null
+++ b/s48/krims/BLURB
@@ -0,0 +1,2 @@
+krims: SRFI-1+. SRFI-9+. Odds and ends (assert, receive/name,
+gen-dispatch).
diff --git a/s48/module-system/AUTHORS b/s48/module-system/AUTHORS
new file mode 100644
index 0000000..2df1b32
--- /dev/null
+++ b/s48/module-system/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler
diff --git a/s48/module-system/BLURB b/s48/module-system/BLURB
new file mode 100644
index 0000000..4c2a44a
--- /dev/null
+++ b/s48/module-system/BLURB
@@ -0,0 +1,2 @@
+module-system: Module system extensions. Run-time access to
+the Scheme48 module system.
diff --git a/s48/sequences/AUTHORS b/s48/sequences/AUTHORS
new file mode 100644
index 0000000..32d2642
--- /dev/null
+++ b/s48/sequences/AUTHORS
@@ -0,0 +1 @@
+Rolf-Thomas Happe
diff --git a/s48/sequences/BLURB b/s48/sequences/BLURB
new file mode 100644
index 0000000..65587c2
--- /dev/null
+++ b/s48/sequences/BLURB
@@ -0,0 +1 @@
+sequences: General and abstract sequences. Vectors.
diff --git a/scsh/afs/AUTHORS b/scsh/afs/AUTHORS
new file mode 100644
index 0000000..2df1b32
--- /dev/null
+++ b/scsh/afs/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler
diff --git a/scsh/afs/BLURB b/scsh/afs/BLURB
new file mode 100644
index 0000000..e4c713f
--- /dev/null
+++ b/scsh/afs/BLURB
@@ -0,0 +1 @@
+afs: Obtain and manipulate access control lists in AFS.
diff --git a/scsh/bytio/AUTHORS b/scsh/bytio/AUTHORS
new file mode 100644
index 0000000..32d2642
--- /dev/null
+++ b/scsh/bytio/AUTHORS
@@ -0,0 +1 @@
+Rolf-Thomas Happe
diff --git a/scsh/bytio/BLURB b/scsh/bytio/BLURB
new file mode 100644
index 0000000..46ca68e
--- /dev/null
+++ b/scsh/bytio/BLURB
@@ -0,0 +1 @@
+bytio: Byte I/O.
diff --git a/scsh/dir-streams/AUTHORS b/scsh/dir-streams/AUTHORS
new file mode 100644
index 0000000..db253c8
--- /dev/null
+++ b/scsh/dir-streams/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler, Eric Knauel
diff --git a/scsh/dir-streams/BLURB b/scsh/dir-streams/BLURB
new file mode 100644
index 0000000..720227e
--- /dev/null
+++ b/scsh/dir-streams/BLURB
@@ -0,0 +1,2 @@
+dir-streams: Represent and process directories as streams of files and
+sub-directories.
diff --git a/scsh/image-info/AUTHORS b/scsh/image-info/AUTHORS
new file mode 100644
index 0000000..95a3c22
--- /dev/null
+++ b/scsh/image-info/AUTHORS
@@ -0,0 +1 @@
+Rolf-Thomas Happe, (credit to Marco Schmidt)
diff --git a/scsh/image-info/BLURB b/scsh/image-info/BLURB
new file mode 100644
index 0000000..7e65a75
--- /dev/null
+++ b/scsh/image-info/BLURB
@@ -0,0 +1 @@
+image-info: Extract vital stats from images (graphics, that is).
diff --git a/scsh/interaction/AUTHORS b/scsh/interaction/AUTHORS
new file mode 100644
index 0000000..2df1b32
--- /dev/null
+++ b/scsh/interaction/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler
diff --git a/scsh/interaction/BLURB b/scsh/interaction/BLURB
new file mode 100644
index 0000000..c731004
--- /dev/null
+++ b/scsh/interaction/BLURB
@@ -0,0 +1 @@
+interaction: Read-eval-print-loop fun.
diff --git a/scsh/pps/AUTHORS b/scsh/pps/AUTHORS
new file mode 100644
index 0000000..2df1b32
--- /dev/null
+++ b/scsh/pps/AUTHORS
@@ -0,0 +1 @@
+Martin Gasbichler
diff --git a/scsh/pps/BLURB b/scsh/pps/BLURB
new file mode 100644
index 0000000..a9693d8
--- /dev/null
+++ b/scsh/pps/BLURB
@@ -0,0 +1 @@
+pps: a portable version of the ps (process status) command.