The Historical Society of
Rockland County
Two seats have opened up for the May 9 "The Spy and the Traitor" bus trip. Get them while they last!
A Brief History of Rockland County
Rockland County is the smallest county in New York State outside the five boroughs of New York City. It is bounded by the Hudson River on the east, the State of New Jersey on the south, and the Ramapo Mountains to the north and west. Although the county consists of only 176 square miles, it is a land rich in history.
To a newcomer, Rockland County may appear to be border-to-border housing developments built over the past forty years, but its historical roots go back almost four hundred years—more than ten thousand years if you include Native American history. Records indicate that the first residents were the Indians of the Delaware or Lenape Nation, who were scattered throughout the county in small bands. ...
RevWar250
BUS DAYTRIPS
The Spy and the Traitor:
The Andre-Arnold Affair
Saturdays: May 9, July 11, August 8, September 19, & October 10
Rockland and the Revolution
A 250th Anniversary Exploration
To celebrate the semiquincentennial anniversary of the signing of the Declaration of Independence, the 2026 exhibition takes a deep look at the American War for Independence through the eyes of notable Rockland County historians, past and present.
Now Playing: April Podcast
Crossroads of
Rockland History
Nat Fein: A Talent for Living
Journalist and filmmaker Frank LoBuono discusses his documentary about Nat Fein, the award-winning photographer who captured one of the most iconic images in American sports history.
Upcoming Events
Country Supper & 33rd Annual
Rockland County Executive's
Historic Preservation Merit Awards
Sunday, May 17, 4 pm
Rockland County Local History Event Calendar
26
1pm HSRC: RevWar250 Lecture: "The Week That Won the War"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
27
28
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
7pm Genealogical Society of RC: Monthly Meeting
29
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
30
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
2
10am New City Library: Hikes and History-Dutch Gardens and Demarest Kill
11am Ft. Montgomery: Battoes and 18th Century Maritime Carpentry
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
3
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
4
5
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
6
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
7
9am HSRC: Bus Daytrip to Mount Gulian and Washington's HQ State Historic Site
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
8
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
9
8:45am HSRC: The Traitor and the Spy Bus Daytrip
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Ft. Montgomery: A Revolutionary Revelation: The Complex Story of Peggy Shippen Arnold
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
10
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
11
12
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
13
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
14
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
15
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
16
11am Harmony Hall: Colonial Day Rev250 & "Minutemen Militia"
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
17
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
3pm Tappantown Historical Society: The Spirits of '76
4pm HSRC: 33rd Historic Preservation Awards & Country Supper
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18
19
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
20
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
21
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
7pm HS-Nyacks: Regular Meeting
22
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
23
10am Ft. Montgomery: 18th Century Games and Toys
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
24
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
25
26
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
7pm Genealogical Society of RC: Monthly Meeting
27
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
28
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
29
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
30
11:30am HSRC: "Treason of the Blackest Dye" Local History Meetup
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
31
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
1pm O'town Museum: Exhibition Opening: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
1pm HSRC: RevWar250 Lecture: On His Majesty’s Secret Service
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
1
2
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
3
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
4
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
5
10am O'town Museum Exhibition: "1776/1976: From Democracy to Disco: Orangetown and the Bicentennial"
12pm HSRC: "Rockland and the Revolution: A 250th Anniversary Exploration"
6
10am Ft. Montgomery: Rolling the Dice – A Revolutionary War Gaming Experience!
1pm HS-Nyacks: Paul Tappenden-Nyack & Nature Exhibition
1pm Haverstraw Brick Museum: Mary Mowbray-Clarke Exhibition
Show all
Press Room
South of the Mountains
Dive into a world of captivating stories, insightful discussions, and endless entertainment.
Issues of South of the Mountains from 1957 to 2013 are available in fully searchable PDF form online via the New York Heritage portal.
Collections
The Historical Society of Rockland County's collection comprises approximately 3,650 objects that date from the early eighteenth century to the present.
Podcasts
Crossroads of
Rockland History
Host Clare Sheridan welcomes guests every month to explore, celebrate and learn about the rich history of Rockland County and New York's Lower Hudson Valley.
