Using brads to secure the spines of a cardstock-cover album is a fun option. Here's two suggestions for accomplishing the task:
1. No overlay (not shown). Punch holes at equal intervals through the covers and pages and add brads.
2. Overlay (shown below). Punch holes at equal intervals though the covers and one side of a folded strip of paper used for a spine cover. Insert brads and secure the at the back. Fold the non-punched side of the folded strip to the back and secure into place with adhesive.