It began in the early 1800s and continues today. The pines are what brought people to this part of the country and despite early over harvesting and careless practices it is still a major industry.  Rules and limitations protect about half the park but the remaining 50% is still actively lumbered.  Most of the effort is on the northern sections well away from the heavily traveled tourist corridor.  We have enjoyed our stay so I guess they have struck an acceptable balance between outdoor recreation vs the timber industry.

Floating horse powered winch for moving logs across lake

The friends of Algonquin run a pretty good logging museum. A trail wanders through a tall pine stand past exhibits of old logging camps and equipment.  Its worth the walk through.