In the case of Everson _v._ Young, then Librarian of Congress, Judge Cole, of the Supreme Court of the District of Columbia, in 1889, refused a mandamus against the copyright officer while admitting that "the librarian had no discretion" on the ground that mandamus "will not be used to order a vain thing to be done" and that a blank book "containing not a single English sentence" is not a subject of copyright. "The copyright statutes," as is said in Circular Letter no. 32 of the Copyright Office, "in designating the classes of articles which may be registered in this office do not mention blank forms or blank books. The United States courts which have jurisdiction in cases arising under the copyright laws have held that blank forms or blank books or similar articles _for use in themselves_ are not subject to copyright, and hence are not registrable in this office. A bill was introduced in Congress in 1904 proposing to extend the protection of the copyright law to vouchers, certificates, or other business forms, wholly or partly printed. But the measure was not favorably acted upon and did not become law." This exclusion does not refer to such publications as an insurance policy or a legal document, on which blank spaces are to be filled in, which are accepted as proper subject-matter for copyright by the Copyright Office. {Sidenote: Combinations and arrangements} The copyright under certain categories above scheduled may be in the combination and arrangement only, or it may be also in any original material included with other material. Quantity is not an essential element in copyright so much as "substantial importance." An English court protected a passage of only sixty words. {Sidenote: Advertisements}