The Community of the Sisters of Charity, an order of the Congregation of the Mission founded by St. Vincent De Paul and dedicated to teaching and nursing, was founded in the U.S. in 1809 by St. Elizabeth Seton (1774-1821). This collection of 580 postcards "documents the spirituality and mission of the Vincentians" and includes images of institutions such as hospitals, churches, and seminaries in many U.S. states including California, Illinois, Indiana, Kansas, Kentucky, Louisiana, Missouri, Maryland, and Massachusetts. "Spanning 200 years, these postcards reflect the heritage of the religious orders, the growth of social institutions, advancements in technology, and changes in urban environments." Visitors can browse the full collection or use advanced and simple searches to locate images of particular interest. Full bibliographic information accompanies each image. This archive is of interest to anyone researching the history of religious institutions in 19th- and 20th-century America.

Kansas City's Local 627, one of several African American musicians' unions affiliated with the American Federation of Musicians, was founded in 1917. This website traces its history over the course of the 20th century. This history is divided into nine chronological sections, including introduction to the roots of Kansas City jazz style, early jazz bands, bigger bands and a new headquarters for the organization, jazz during World War II, the thriving music scene in the 1950s, the merger with Local 34, and the efforts of the Mutual Musicians Foundation to promote jazz in the 1960s and 1970s.

Upon entering each section, visitors are greeted by a video presentation of photographs of prominent Kansas City musicians and newspaper articles documenting their accomplishments, accompanied by a jazz soundtrack. In addition to explanatory text introducing musicians and prominent events in Kansas City history, each section also includes roughly 20 photographs, as well as a few songs of the era, which can be listened to using RealPlayer. Useful for those interested in Kansas City history or in U.S. music culture in the 20th century more generally.

More than 225 music selections from a private collector's 78 rpm recordings produced between 1900 and the 1930s. Music is organized according to type of recording: acoustical (pre-1925) and electrical. Includes music in a variety of styles—ragtime, opera, jazz, classical, marching bands, and swing. Listings for selections provide information on vocalist, band, and soloist, and include annotations of a few sentences each. "Dismuke's Hit of the Week," updated weekly with one to three new audio selections, also offers explanatory material of 100 to 300 words in length. Also includes images of approximately 15 record labels. Of value to those studying American popular culture and music history.

A small but well-constructed site on the activities and influence of the Communist Party (CP) in Washington State, where the CP had more significance than in most other areas of the U.S. The site contains 21 video excerpts of oral history interviews with five current members who describe experiences from the late 1930s to the present. Topics include the role of the CP in 1930s labor organizing, relations with the Soviet Union, the Red Scare that began in 1947, and anti-racism activity in the 1960s. Additional subjects cover relations with the New Left, plans for revitalization, methods of recruitment, and growing up in a Communist family. The site also offers nine essays totaling 25,000 words, accompanied by more than 200 images, that provide a narrative history of the movement. Users will also find 30 woodcut illustrations from two radical 1930s journals and an annotated timeline. This will provide a good introduction to radical politics on a local level.