请教杨鹏难句第074 题的理解

红红的云

074:
Portrayals of the folk of Mecklenburg County, North Carolina, whom he remembers from early childhood, of the jazz musicians and tenement roofs of his Harlem days, of Pittsburgh steelworkers, and his reconstruction of classical Greek myths in the guise of the ancient Black kingdom of Benin, attest to this.

文中解释 portrayals 后面有三个修饰成分: 1st : of the folk of Mecklenburg County, North Carolina; 2nd f the jazz musicians and tenement roofs of his Harlem days  ;3rd:  of Pittsburgh steelworkers  这个我能够理解,但是我有个疑问:难道不需要一个"and" 把 第三个of 修饰成分和前面的两个修饰成分连接起来吗?  文中的这种表达语法上对不对?

谢谢各位的回答.