Update imprint and colophon to account for multiple transcription/scan sources

src/epub/text/colophon.xhtml

@@ -21,11 +21,9 @@
 			and is based on transcriptions produced by<br/>
 			<b epub:type="z3998:personal-name">Joseph E. Lowenstein</b>, <b epub:type="z3998:personal-name">Charles Franks</b>, <b epub:type="z3998:personal-name">Greg Weeks</b>, <b epub:type="z3998:personal-name">John Bickers</b>, <b epub:type="z3998:personal-name">Dagny</b>, <b epub:type="z3998:personal-name">Earl <abbr epub:type="z3998:given-name">C.</abbr> Beach</b>, <b epub:type="z3998:personal-name">Glynn Burleson</b>, <b epub:type="z3998:personal-name">Jim Tinsley</b>, <b epub:type="z3998:personal-name">Tim O’Connell</b>, <b epub:type="z3998:personal-name">Vince Rice</b>, and <a href="https://www.pgdp.net">The Online Distributed Proofreading Team</a><br/>
 			for<br/>
-			Project Gutenberg (<a href="https://www.gutenberg.org/ebooks/2777">Cabbages and Kings</a>, <a href="https://www.gutenberg.org/ebooks/2776">The Four Million</a>, <a href="https://www.gutenberg.org/ebooks/3707">The Trimmed Lamp</a>, <a href="https://www.gutenberg.org/ebooks/1725">Heart of the West</a>, <a href="https://www.gutenberg.org/ebooks/1805">The Gentle Grafter</a>, <a href="https://www.gutenberg.org/ebooks/1444">Voice of the City</a>, <a href="https://www.gutenberg.org/ebooks/1646">Roads of Destiny</a>, <a href="https://www.gutenberg.org/ebooks/1583">Options</a>, <a href="https://www.gutenberg.org/ebooks/2141">Strictly Business</a>, <a href="https://www.gutenberg.org/ebooks/1595">Whirligigs</a>, <a href="https://www.gutenberg.org/ebooks/2851">Sixes and Sevens</a>, <a href="https://www.gutenberg.org/ebooks/3815">Rolling Stones</a>, and <a href="https://www.gutenberg.org/ebooks/2295">Waifs and Strays</a>)<br/>
-			and on digital scans available at the<br/>
-			Internet Archive (<a href="https://archive.org/details/cu31924022067254">Cabbages and Kings</a>, <a href="https://archive.org/details/cu31924012602755">The Four Million</a>, <a href="https://archive.org/details/cu31924022015394">The Trimmed Lamp</a>, <a href="https://archive.org/details/cu31924022025799">Heart of the West</a>, <a href="https://archive.org/details/gentlegrafter02henrgoog">The Gentle Grafter</a>, <a href="https://archive.org/details/in.ernet.dli.2015.93860">Voice of the City</a>, <a href="https://archive.org/details/roadsdestiny00henrgoog">Roads of Destiny</a>, <a href="https://archive.org/details/cu31924022025807">Options</a>, <a href="https://archive.org/details/StrictlyBusiness">Strictly Business</a>, <a href="https://archive.org/details/whirligigs02henrgoog">Whirligigs</a>, <a href="https://archive.org/details/sixesandsevens00henrgoog">Sixes and Sevens</a>, <a href="https://archive.org/details/rollingstones04henrgoog">Rolling Stones</a>, <a href="https://archive.org/details/waifsandstrayst00henrgoog">Waifs and Strays</a>, <a href="https://archive.org/details/ohenryanaseveno00presgoog">O Henryana</a>, <a href="https://archive.org/details/postscripts00henr">Postscripts</a>, <a href="https://archive.org/details/o-henry_a-christmas-pi">A Christmas Pi</a>), the<br/>
-			HathiTrust Digital Library (<a href="https://catalog.hathitrust.org/Record/007926272"><abbr epub:type="z3998:given-name">O.</abbr> Henry Encore</a>), and<br/>
-			Google Books (<a href="https://books.google.com/books?id=mG0XAQAAIAAJ">The Lotus and the Cockleburrs</a>).</p>
+			<a href="https://standardebooks.org/ebooks/o-henry/short-fiction#transcriptions">Project Gutenberg</a><br/>
+			and on digital scans from<br/>
+			<a href="https://standardebooks.org/ebooks/o-henry/short-fiction#page-scans">various sources</a>.</p>
 			<p>The cover page is adapted from<br/>
 			<i epub:type="se:name.visual-art.painting">The Soul of the Soulless City</i>,<br/>
 			a painting completed in 1920 by<br/>

src/epub/text/imprint.xhtml

@@ -12,7 +12,7 @@
 				<img alt="The Standard Ebooks logo." src="../images/logo.svg" epub:type="z3998:publisher-logo se:image.color-depth.black-on-transparent"/>
 			</header>
 			<p>This ebook is the product of many hours of hard work by volunteers for <a href="https://standardebooks.org">Standard Ebooks</a>, and builds on the hard work of other literature lovers made possible by the public domain.</p>
-			<p>This particular ebook is based on a transcription produced for <a href="https://www.gutenberg.org/ebooks/2777">Project Gutenberg</a> and on digital scans available at the <a href="https://archive.org/details/cu31924022067254">Internet Archive</a>.</p>
+			<p>This particular ebook is based on transcriptions produced for <a href="https://standardebooks.org/ebooks/o-henry/short-fiction#transcriptions">Project Gutenberg</a> and on digital scans from <a href="https://standardebooks.org/ebooks/o-henry/short-fiction#page-scans">various sources</a>.</p>
 			<p>The source text and artwork in this ebook are believed to be in the United States public domain; that is, they are believed to be free of copyright restrictions in the United States. They may still be copyrighted in other countries, so users located outside of the United States must check their local laws before using this ebook. The creators of, and contributors to, this ebook dedicate their contributions to the worldwide public domain via the terms in the <a href="https://creativecommons.org/publicdomain/zero/1.0/">CC0 1.0 Universal Public Domain Dedication</a>. For full license information, see the <a href="uncopyright.xhtml">Uncopyright</a> at the end of this ebook.</p>
 			<p>Standard Ebooks is a volunteer-driven project that produces ebook editions of public domain literature using modern typography, technology, and editorial standards, and distributes them free of cost. You can download this and other ebooks carefully produced for true book lovers at <a href="https://standardebooks.org">standardebooks.org</a>.</p>
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