Now when Black Boy was published there was a war bond advertisement on the back cover of the book.

当《黑孩子》出版时,战争债券的广告是附在书后的。

耶鲁公开课 - 1945年后的美国小说课程节选

I could have brought it to class and showed it to you, but this was issued during the Revolutionary War to help finance the war.

我本来可以把它带到课上,给你们看一下,这张债券发行于,独立战争期间,其目的是战争筹款

耶鲁公开课 - 金融市场课程节选