The chapters are organized thematically rather than chronologically, making it difficult to follow.
It contains 4,000 titles covering the period between 1880 and 1960, which are grouped thematically into eleven chapters, each focusing on different kinds of sources.
Following the rules of choral responsion, the antistrophe matches the metrical pattern of the strophe, echoing its melody while also introducing a marked contrast thematically.
There are also 300 panels showing thematically related words.
Hundreds of blues songs treat the railroad thematically.
Next, the students read four texts thematically related to these topics and wrote what the texts were about, concentrating on the most important information.
