A letterbox, no trade items. Do not trade out the stamp. Leave it in the box. One of the purposes of a letterbox is to collect rubberstamp images instead of trinkets. I hope you'll join in the fun and bring along your personal letterbox passport/journal (some people like to carry index cards then scrapbook them later).
Bring your own ink (any colour) if you plan to stamp your letterbox passport/journal. For more info about LB hybrids see: http://www.geocaching.com/about/guidelines.aspx#letterbox
From the trailhead walk approximately 70 steps then stop. (You will see the boardwalk up ahead - about 35 steps ahead). The box is 7 steps to your right. In the middle of 3.
Since it is so close to the trail you'll need to keep an eye out for muggles.
I have added an additional waypoint for the final location. I want to make my letterboxes serve both the letterboxing community and the geocaching community. By adding an additional waypoint, geocachers who prefer finding boxes by coords can do so and those that prefer the traditional letterbox method can ignore the additional waypoint.
Winter: may be frozen in.
A little history about Preservation Park (from www.recycling.org):
Preservation Park opened October 19, 1989. The size of Preservation Park is equivalent to the acreage of trees saved from the amount of newsprint collected in the first year of the Curbside Recycling Program in the City of Guelph. An equivalent acreage of Rain Forest was purchased in the name of the children of the City of Guelph. Handicapped accessible trails where paid for by the proceeds from the sale of recyclable materials from the Recycle Guelph Drop-off Depot.
------- This letterbox is also listed on Atlas Quest