This series covers the administrative records of the Watnong Garden Club to include the constitution and bylaws, annual programs, relationships with county and state organizations, press releases, awards, letterhead stationary, organizational histories, and information on topics presented at monthly meetings.

The Watnong Club kept extremely accurate records of their financial history as evidenced by the abundance of materials in this series. Items include budgets, balance sheets, and ledger books, bank records, cancelled checks, bills and receipts and the final check written by the club in 2005.

The club was governed by an executive board composed of a President, Vice President, Treasurer, Recording Secretary, and members at large. This series contains those records created by or about the board including lists of board members and past presidents, meeting agendas and minutes, committee reports and letters of resignation from the board.

The club met monthly and minutes were kept for every meeting though the collection does not hold the entire run. For the 1930's many of the minutes are combined with annual reports, annual meeting minutes, etc. The annual reports containing annual meeting minutes are included in this series of meeting minutes and agendas. One exception being the 1934 minutes and report, which is in the annual report file folder of the Executive Board series.

This series contains the Treasurer's reports given at the monthly meetings and the annual Treasurer's reports given each year at the November meeting.

Maintaining strict records of club membership was a crucial aspect of the Watnong Garden Club's administration. This series contains applications, membership lists, correspondence, renewal forms, membership cards, information on dues, and membership directories.

This series contains general correspondence to and from the Watnong Garden club. It includes many letters of thanks and appreciation for the club's programs. Also notable is the letter from the club President informing its members of the club's dissolution.

Card parties were held to raise money for different reasons, 1) to pay membership dues in the Federated Garden Clubs of New Jersey, 2) to pay for Christmas work, 3) to fund the school grounds planting program. The club also held annual plant sales, the proceeds of which went mainly to the Morris Junior Museum for the purchase of new shrubs and the upkeep of the trees and shrubs on the premises.

As a friend of the Frelinghuysen Arboretum the Watnong Club enjoyed many privileges including use of the Arboretum's classrooms, the receiving of its newsletter, and invitations to all Arboretum events. This series contains programs, correspondence and information on events.

Public projects played a crucial role in the history of the Watnong Garden Club. This series contains records from the club's Christmas wreath project, the Morris Junior Museum planting project, and the George Washington School project.

This series contains records that document the club's annual events including parties, flower shows, exhibits, and meetings.

The club sought to educate its members as well as the general public about horticulture. This series contains material related to the club's trips, correspondence with public speakers, brochures from pubic and private gardens, and newspaper articles referencing gardening techniques and information.

One of the club's missions was environmental activism and this series provides reports and correspondence giving a glimpse into its related initiatives. The club's interest was local, national and global but most of its efforts were rooted in New Jersey projects.

This series contains the title page of a landscaping book written by Garden Club member Alice L. Dunstan in 1955, as well as two other titles. The other titles are club publications written by and for its' members. One is an undated and untitled booklet and the other is the club's newsletter, , from 1987-1988.

This series contains records that document the Watnong Club's membership in the Garden Club of New Jersey including correspondence, participation in flower shows, and membership items. This series also contains items from other local garden clubs that the Watnong Garden Club either cooperated with or were aware of.

This series contains photographs from tours, gardens, flower shows and other events that the Watnong Garden Club participated in. There are also negatives and slides of photographs.

Items in this series include a matted photograph, an audio tape of a speech given at the 50th Anniversary, and a stamp.