The annual reports of the Ladies' Christian Union provide a thorough overview of the LCU's activities for the years 1859-2001. They include the treasurer's report, the names of subscribers and members, a report on the devotional work for the year, and the constitution and bylaws of the organization. Annual Reports after 1895 include reports from the Annual Meetings. The annual reports also provide dated descriptions of the buildings used for boarders. They often describe the layout, decorations, and repairs or modernizations made to the buildings, such as additions of electricity or steam heat. They also list forms of entertainment provided for the girls such as sewing machines and a library and, eventually, televisions, stereos, and computers.

The annual reports also contain some general information on the boarders that the LCU served. They contain examples of the boarders' professions and their subjects of study and also include the number of girls who married or who suffered illnesses that year. Despite the fact that deaths were common, the Annual Reports from the nineteenth and early twentieth century focus on the healthfulness of their facilities. The Annual Reports also consistently reaffirm why affordable Christian housing is imperative to the young women of the age.

There were no annual reports created for 1999 and 2000.

This subseries contains reports on the residents, employees, and maintenance of the Katharine House. It includes some wartime information such as household shortages and extra responsibilities taken on by the young women such as air raid duty or first aid classes.

This subseries contains the reports of the Devotional Committee of the LCU. The reports summarize all the devotional work overseen by the Committee, including the Devotional Meetings and the Band of Prayer.

This subseries includes an almost complete set of minutes for general LCU meetings for years 1858-1917. The minutes contain discussion of the current business of the organization including statements from the treasurer, reports of various committees, and descriptions of issues concerning houses owned by the LCU. The minute books reveal details about the death of LCU members, issues with specific boarders, and particulars regarding the purchase and maintenance of LCU homes. The books also contain minutes of the Annual Meeting, usually held in January of each year.

Some of the meeting minutes are from monthly meetings (1868-1870 and 1914-1917) and others are from meetings held bimonthly (1871-1913). Because the LCU did not meet July through September, there are no minutes for those months in any year.

This subseries contains information on the administration of the Young Women's Home, later called the Sage House. It includes minutes detailing the condition of the building as well as information on boarders.

The Devotional Meetings held by the LCU met on Wednesdays from November through May. The meetings were open to anyone and included prayer and a sharing of Christian thoughts or experiences. The minutes of the meetings describe the testimonies and prayers that occurred during the meetings.

This subseries includes property information such as leases, deeds, and titles for 27 and 28 Washington Square North and 49 West 9th Street. Since the Sage House was the LCU's oldest home, this subseries contains the largest amount of material in the series.

This subseries contains real estate documents from the various locations of the Hegeman House. The Abstract of Title to 308 Second Avenue recounts the history of the property that was formerly part of Peter Stuyvesant's estate.

A bill for the development of real estate title insurance.

This subseries contains insurance and building inspection information for the Milbank Home on 10th Street. The inspection certificates indicate the examination of the house's wiring, fixtures, and electrical apparatus.

This subseries contains the deed for the Rosemary House as well as a letter from an attorney recommending more insurance coverage for the house and the furniture.

The one folder of material contains an agreement between the Roberts House and a neighbor over the proposed construction of a wall.

This series contains volumes providing personal details of particular boarders, or "inmates" as the LCU initially called them, of the LCU homes. The volumes included in this series contain the names, profession, Protestant denomination, references given, and sometimes the family situation of numerous boarders. The Day Book contains lists of cash received and household goods purchased. These materials have been digitized and can be viewed here.

The volumes in this subseries mainly include the names, addresses, and Protestant denomination of each member. These materials have been digitized and can be viewed here.

The Band of Prayer was a group of the LCU who prayed for each others' petitions. The Band was open to women everywhere, and had members from all over the country and eventually, all over the world. These materials have been digitized and can be viewed here.