This monograph encompasses notable Czech Americans, Slovak Americans and Bohemian Jews, and their descendants, many of them heretofore unknown, or ignored, forgotten, obscured, concealed or snubbed. A number of these individuals may not be even aware of their ancestry. Apart from single individuals, a number of immigrants have grown into respectable families, some of which are exceedingly large which is the case of Augustine He¿man's and Frederick Philipse's descendants who have lived in America since the mid of the 17th century. Among them you will find a plethora of outstanding personalities who played a significant and frequently leading role in the development, growth and governing of the United States. This is reflected in the number of governors, mayors, legislators, as well as in business and professionals, in just about every facet of human endeavor. The compendium is divided into two parts. Part I refers to Individuals, organized into various areas in which they have gained some notoriety, encompassing business, religion, government and politics, military, activism, law and jurisprudence, medicine and allied health sciences, visual arts, dramatic arts, music, creative writing, media and publishing, education, humanities, social sciences, natural sciences, engineering and technology, sports and athletics, and recreation. Part II covers Families and their descendants whose mostly English-sounding names will be readily recognizable, yet their Czechoslovak roots may not be known. The selection of families has been based on their size and importance, and the author's familiarity. The approach taken in this publication is unique which hopefully will open up new horizons for students, researchers and people interested in the immigration and cultural history.