The series, Rivers of America, edited by Constance Lindsay Skinner, is rolling up a remarkable record -- every one a ten strike! With each addition, I hesitate to open the first pages. Will it stand the test of the past? And -- so far -- the answer is ""Yes."" POWDER RIVER is as individual as KENNEBEC and SUWANNEE RIVER. It is another distinct contribution to the panel of America. It is the story of a frontier, Wyoming, where the Sioux Nation made its last stand, where Texas cattlemen established a new feudal society, where Johnson County War was fought, where the Pony Express made short history, where sheepmen came and went, where miners, prospectors, adventurers, bad men held the stage for brief moments, and where the dude ranches were inaugurated and now hold away. Grand reading -- good Americana -- good factual background for Western fans.