This package was debianized by Javier Fernandez-Sanguino Pena <jfs@debian.org>
Sat,  2 Dec 2000 16:23:43 +0100.

It was downloaded from 
Primary-site:   sunsite.unc.edu /pub/Linux/utils/shell
Original-site:  sunsite.unc.edu /pub/Linux/utils/shell
Alternate-site: tsx-11.mit.edu /pub/linux/sources/usr.bin

As of this writting (December 2010) the upsteam page is
http://unicorn.us.com/cal.html. Alternatively sources can also be downloaded
from Chris Bagwell's site available at http://www.cnpbagwell.com/projects

Upstream Author: Alex Matulich <alex@unicorn.us.com>
                 Chris Bagwell 

Copyright: 

    (c) 1993-2002 Alex Matulich

License:

The cal.c file holds the following BSD-style license

---------------------------------------------------------------------
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither name of Unicorn Research nor the names of its contributors may be
 * used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS `AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------------

On the other hand, the cal sources license, as described in its readme file has
been placed into the Public Domain.  This is the note verbatim:

---------------------------------------------------------------------

This archived collection of files is placed into the Public Domain.
Feel free to redistribute the this archive, but PLEASE make sure the
archive contains all the original files, namely:

        readme.cal        - this file
        cal.exe           - the MSDOS executable program
        cal.doc           - documentation for cal.exe
        cal.dat           - optional sample data file of appointment dates
        cal.col           - optional sample file of color attributes
        source/*.os2      - files about compiling the source for OS/2
        source/*.unx      - unix-related information
        source/cal.1      - unix man page for cal with formatting codes
        source/cal.c      - source code for cal
        source/makefile.* - makefiles

---------------------------------------------------------------------


In Debian, all the above files are available in the source package. The binary
package ships only the compiled version of the cal.c as well as the manpage.