The major cost of this approach is in preparation and printing of the booklet. Some agencies successfully ask that the booklets be returned at the end of the trail, or that a quarter be deposited to defray expenses. Other areas offer guidebooks at no charge. The booklet, which is taken home, serves as an advertisement and a continuing source of information. Problems in maintaining an adequate supply of booklets may be encountered with this method.
Maintenance costs are also slightly increased if leaflets are discarded on the trail.
Another disadvantage is that once the guidebook is printed, the interpretive pattern is fixed, unless signs and guided tours are used as supplements. In addition to the guidebooks, seasonal checklists of plants, birds and mammals can be distributed from a box at the trail head. In-place Signs An explanation or interpretation of selected features may be included on signs located at the sites. They may be keyed to maps or guidebooks on self-guiding trails. Signs can be made by your agency or bought from a company.