Reading Assignments, and other reference material.
Primary : EA&C Ch 1.1, 1.2, and appendices A4, B and C; B&M Ch 1 (particularly p10-15), and p290; B&T2 Ch 1 p1-20
Additional : EAA : "Extragalactic Astronomy c1900-1950" Smith
"The Cambridge Concise History of Astronomy" Ed Hoskin (CUP: 1999)
Ch 7 & 8.
"Man Discovers the Galaxies" Berendzen, Hart, & Seeley (New York: Science
History Publications; 1976)