For main/twain/inc/twain.h:

Copyright (C) 2007 TWAIN Working Group: Adobe Systems Incorporated,
AnyDoc Software Inc., Eastman Kodak Company, Fujitsu Computer Products
of America, JFL Peripheral Solutions Inc., Ricoh Corporation, and
Xerox Corporation.  All rights reserved.

Copyright (C) 1991, 1992 TWAIN Working Group: Aldus, Caere, Eastman-Kodak,
Hewlett-Packard and Logitech Corporations.  All rights reserved.

Copyright (C) 1997 TWAIN Working Group: Bell+Howell, Canon, DocuMagix,
Fujitsu, Genoa Technology, Hewlett-Packard, Kofax Imaging Products, and
Ricoh Corporation.  All rights reserved.

Copyright © 1998 TWAIN Working Group: Adobe Systems Incorporated,
Canon Information Systems, Eastman Kodak Company,
Fujitsu Computer Products of America, Genoa Technology,
Hewlett-Packard Company, Intel Corporation, Kofax Image Products,
JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
All rights reserved.

Copyright © 2000 TWAIN Working Group: Adobe Systems Incorporated,
Canon Information Systems, Digimarc Corporation, Eastman Kodak Company,
Fujitsu Computer Products of America, Hewlett-Packard Company,
JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
All rights reserved.

The TWAIN licence:
http://www.twain.org/about-twain/license.html
The TWAIN Working Group grants customer ("Customer") the worldwide,
royalty-free, non-exclusive license to reproduce and distribute the software
and documentation of the TWAIN toolkit ("TWAIN Toolkit"). The TWAIN Toolkit was
designed to be used by third parties to assist them in becoming compliant with
the TWAIN standard, but it has not been developed to the standards of a
commercial product. Consequently, the TWAIN toolkit is provided AS IS without
any warranty. THE TWAIN Working Group disclaims all warranties in the TWAIN
toolkit whether implied, express or statutory, including, without limitation,
the implied warranties of merchantability, noninfringement of third party rights
and fitness for a particular purpose. The TWAIN Working Group disclaims all
liability for damages, whether direct, indirect, special, incidental, or
consequential, arising from the reproduction, distribution, modification, or
other use of the TWAIN Toolkit.

As a condition of this license, Customer agrees to include in software programs
based in whole or in part on the TWAIN Toolkit the following providions in
(i) the header or similar file in such software and (ii) prominently in its
documentation and to require its sublicensees to include these provisions in
similar locations: The TWAIN Toolkit is distributed as is. The developer and
distributors of the TWAIN Toolkit expressly disclaim all implied, express or
statutory warranties including, without limitation, the implied warranties of
merchantability, noninfringement of third party rights and fitness for a
particular purpose. Neither the developers nor the distributors will be liable
for damages, whether direct, indirect, special, incidental, or consequential,
as a result of the reproduction, modification, distribution or other use of
the TWAIN Toolkit.

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