[Mycology] Can anyone ID these mushrooms please

[DaveS7]

These photos were all from the same large cluster (about 30 in. (75 cm)
across).
they were growing under white pines over what I'm fairly sure was a white
pine stump just beneath the surface of the ground.
These were in suffern, NY which is in rockland county of southern New York
State.
Links to the photos are below.

http://www.pillcalculator.com/mushrooms_kpe/mushroom_1_9-09-07.jpg
http://www.pillcalculator.com/mushrooms_kpe/mushroom_1_9-08-07.jpg
http://www.pillcalculator.com/mushrooms_kpe/mushroom_2_9-08-07.jpg