Silveus' Texas Grasses

Mary Barkworth stipoid at CC.USU.EDU
Sun Mar 23 17:56:17 CST 1997

Does anyone know who holds the copyright on Silveus' Texas Grasses?  The
copy here has a copyright date of 1933, with Silveus himself being the
copyright holder.  I would like to obtain permission to use some of its
illustrations for the Manual of North American Grasses (of which
information is gradually (very gradually) becoming available at

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