Hey, we are neighbors. If you pop over to the extension office, you can get a copy of the pie filling recipes as well as other pamphlets. Most have a small fee, but worth it.
If you have a dial gauge pressure canner, be sure to have it tested before using it each year. Someone will be at Wilco again. You will need to check the schedule. I don't have it at hand right now.
Anyway, here is the pie filling recipe, the format may be a little strange, but the best I can do without retyping it:

Cherry Pie Filling

For 1 quart filling:
3 1/3 cups Sour cherries -(fresh or thawed)
1 cup Granulated sugar
1/4 cup Clear Jel (tm); plus 1 tbsp Clear Jel (tm)
1 1/3 cups Cold water
1 tbsp Bottled Lemon Juice; plus..
1 tsp Bottled Lemon Juice
1/8 tsp Cinnamon (optional)
1/4 tsp Almond extract (optional)
6 drops Red food coloring (opt.)

For 7 quarts filling:
6 quart Sour cherries -(fresh or thawed)
7 cups Granulated sugar
1 3/4 cups Clear Jel (tm)
9 1/3 cups Cold water
1/2 cup Bottled Lemon Juice
1 tsp Cinnamon (optional)
2 tsp Almond extract (optional)
1/4 tsp Red food coloring (opt.)

Quality: Select fresh, very ripe, and firm cherries. Unsweetened frozen cherries may be used. If sugar has been added, rinse it off while the fruit is still frozen.

Yield: 1 quart or 7 quarts

Procedure: (See Table 1 for suggested quantities) Rinse and pit fresh cherries, and hold in cold water. To prevent stem end browning, use ascorbic acid solution.

For fresh fruit, place 6 cups at a time in 1 gallon boiling water. Boil each batch 1 minute after the water returns to a boil. Drain but keep heated fruit in a covered bowl or pot.

Combine sugar and Clear Jel(tm) in a large saucepan and add water, if desired, add cinnamon, almond extract, and food coloring. Stir mixture and cook over medium high heat until mixture thickens and begins to bubble. Add lemon juice and boil 1 minute, stirring constantly. Fold in drained cherries immediately and fill jars with mixture without delay, leaving 1 inch headspace. Adjust lids and process immediately according to the recommendations in Table 2.

Table 1. Cherry Pie Filling. (See above for Quantities of Ingredients Needed For 1 Quart or 7 Quarts)

Table 2. Recommended process time for Cherry Pie Filling in a boiling-water canner. Pints or quarts, 35 minutes.