Buy at Amazon Honour, Hugh. Romanticism . Boulder, CO: Westview Press, 1979. ISBN: 9780064300896.

It is also suggested that you read or at least skim the appropriate entries for the given composers in the New Grove Dictionary of Music and Musicians.

1 An Introduction to the Romantic Genres
Part 1: Intimacy and the (Self-) Portrait: Piano Music and Songs
2 Songs and Piano Music of Schubert and Mendelssohn Honour. Introduction, Chapter 1.
3 Songs and Piano Music of Schumann Honour. Chapter 7.
4 Piano Music of Chopin and Liszt
5 Brahms, Wolf and Strauss
6 Faure and Debussy
Part 2: Romantic Chamber Music
7 Schubert String Quintet
8 Brahms
9 Chamber Music in France: Saint-Saens, Franck, Faure and Debussy
10 Quiz 1
Part 3: Drama in the Theater and the Church: Opera and Church Music
11 Weber and Wagner Honour. Chapter 8.
12 Donizetti and Verdi
13 Verdi (cont.) and Gounod
14 Tchaikowsky
Intermezzo: Nationalism
15 Smetana, Grieg, Dvorak, Moussorgsky Honour. Chapter 6.
Part 4: Orchestral Music: Programatic and Absolute
16 Mendelssohn and Schubert
17 Berlioz
18 Schumann and Brahms
19 Tchaikowsky
20 Bruckner and Sibelius
21 Mahler
22 Elgar, Strauss and Debussy
23 Quiz 2
Part 5: Romanticism in America
24 Foster, Gottschalk, Beach, Foote and Chadwick
25 Salon I
26 Salon II