Left to right, top to bottom:
<p>William Fisher Avery (1826-1903)
Albert Graham Beebe (1826-1899)
Henry Walker Bishop (1829-1913)
John Edwin Cory (1825-1865)
Minott Sherman Crosby (1829-1897)
William Austin Dickinson (1829-1895)
John Graeme Ellery (1824-1855)
Daniel Worcester Faunce (1829-1911)
Thomas Legare Fenn (1830-1912)
Edmund Young Garrette (1823-1902)
Augustine Milton Gay (1827-1876)
Archibald Falconer Gilbert (1825-1866)
George Henry Gould (1827-1899)
James John Howard Gregory (1827-1910)
Leicester Porter Hodge (1828-1851)
George Howland (1824-1892)
Jacob Merrill Manning (1824-1882)
Jeremiah Lemuel Newton (1824-1883)
Joseph Nickerson (1828-1882)
David Temple Packard (1824-1880)
Sylvester John Sawyer (1823-1884)
Henry Shipley (1825-1859)
Thomas Morrill Stimpson (1827-1898)
John Howland Thompson (1827-1891)
</p>
Lyman Richards Williston (1830-1897)
<bdi><a href="https://www.wikidata.org/wiki/Q50947674" class="extiw" title="d:Q50947674"><span title="American daguerreotypist photographer">Jeremiah D. Wells</span></a>
</bdi>
1850
<p><a rel="nofollow" class="external free" href="https://consecratedeminence.wordpress.com/2018/03/23/sacrifice-your-darlings/">https://consecratedeminence.wordpress.com/2018/03/23/sacrifice-your-darlings/</a>  The Consecrated Eminence
</p>
The Archives &amp; Special Collections at Amherst College