Question: The Little Iroquois River is a tributary of the Iroquois River (Saint John River), flowing in Notre Dame Mountains, are a portion of which mountain range, extending from the Gaspé Peninsula of Quebec to the Green Mountains of Vermont?

Context paragraphs:
Notre Dame Mountains: The Notre Dame Mountains are a portion of the Appalachian Mountains, extending from the Gaspé Peninsula of Quebec to the Green Mountains of Vermont.

Iroquois River (Saint John River): The Iroquois River is a tributary of the Saint John River (Bay of Fundy) emptying in New Brunswick, in Canada.  This river flows into the Notre Dame Mountains, in the municipality of Dégelis, Quebec, in Temiscouata Regional County Municipality (RCM), in administrative region of Bas-Saint-Laurent, in Quebec; and in the Madawaska County, in New Brunswick, in Canada.

Iroquois River (Indiana-Illinois): The Iroquois River is a 103 mi tributary of the Kankakee River in northwestern Indiana and northeastern Illinois in the United States.  It was named for the Iroquois people.  Via the Kankakee and Illinois rivers, it is part of the watershed of the Mississippi River.

Mohawk people: The Mohawk people (who identify as Kanien'kehá:ka) are the most easterly tribe of the Haudenosaunee, or Iroquois Confederacy.  They are an Iroquoian-speaking indigenous people of North America.  The Mohawk were historically based in the Mohawk Valley in present-day upstate New York west of the Hudson River; their territory ranged north to the St. Lawrence River, southern Quebec and eastern Ontario; south to greater New Jersey and into Pennsylvania; eastward to the Green Mountains of Vermont; and westward to the border with the Iroquoian Oneida Nation's traditional homeland territory.  As one of the five original members of the Iroquois League, the Mohawk were known as the Keepers of the Eastern Door.  For hundreds of years, they guarded the Iroquois Confederation against invasion from that direction by tribes from the New England and lower New York areas.  Their current major settlements include areas around Lake Ontario and the St Lawrence River in Canada and New York.

Southwest Branch Saint John River: The Southwest Branch Saint John River (French: "Rivière Saint-Jean Sud-Ouest" ) is a 62.0 mi river in Maine and Quebec.  The branch originates in "Little Saint John Lake" ( ) on the international boundary between Saint-Zacharie, Quebec and Seboomook Lake Township 5, Range 20, WELS.  The branch forms the Canada–United States border as it flows northeasterly to a confluence with the Little Southwest Branch Saint John River in Seboomook Lake Township 9, Range 18, WELS.  The Southwest Branch flows briefly into Quebec ( ) and then through Maine to its confluence with the Baker Branch Saint John River in Seboomook Lake Township 9, Range 17, WELS.  The Southwest Branch finally joins with the Northwest Branch to form the Saint John River.

Little Iroquois River: The Little Iroquois River is a tributary of the Iroquois River (Saint John River), flowing in Notre Dame Mountains, the Madawaska County, in Northwest of New Brunswick, in Canada.

Crocs River: The Crocs River (French: Rivière des Crocs) is a tributary of the Saint John River (Bay of Fundy), in Quebec and New Brunswick, in Canada.  The Crocs River flows in the southern part of the Gaspé Peninsula, across the following areas:

Saint John Ponds: The Saint John Ponds are a chain of shallow lakes at the headwaters of the Baker Branch Saint John River in the North Maine Woods.  The flow sequence is from the Upper First Saint John Pond, through the Lower First Saint John Pond, Second Saint John Pond, Third Saint John Pond, and Fourth Saint John Pond to the Fifth Saint John Pond.  Flow from one pond to the next is sometimes called Baker Stream rather than the Baker Branch Saint John River.  Great Northern Paper Company dug a canal from Fifth Saint John Pond 2 mi eastward to the North Branch Penobscot River in 1939, and built a dam at the north end of Fifth Saint John Pond so pulpwood logs harvested in the upper Saint John River watershed could be floated down the Penobscot River to Millinocket, Maine.  The canal and dam have fallen into disrepair so most drainage from the ponds again flows down the Saint John River.  All upstream ponds with the exception of the first had dams to regulate discharge flow for log driving, but those dams have similarly fallen into disrepair.  Moose use the ponds as summer refuge from heat and biting insects.

Notre Dame and Mégantic Mountains: The Notre Dame and Mégantic Mountains in Canada are a physiographic province of the larger Appalachian division, and also contain the Chic-Choc Mountains.  The Notre Dame Mountains rise to a level of approximately 2000 ft above sea level and extend southwest to northeast, south of the Saint Lawrence River.  The abundant mineral resources in this region have resulted in a unique mining landscape.  The Notre Dame Mountains extend 500 mi from the Green Mountains of Vermont into the Gaspé Peninsula, Quebec.

Chic-Choc Mountains: The Chic-Choc Mountains, also spelled Shick Shocks, is a mountain range in the central region of the Gaspé Peninsula in Quebec, Canada.  It is a part of the Notre Dame Mountains, which is a continuation of the Appalachian Mountains.

Supporting paragraphs: Little Iroquois River Notre Dame Mountains
Answer: Appalachian Mountains