We derive relative proper motions of stars in the fields of the globular clusters M12, NGC 6362,
M4, M55, M22, NGC 6752, NGC 3201, M30, M10, NGC 362, M5, and 47 Tucanae based on data collected
between 1997 and 2015 with the 1-m Swope telescope of Las Campanas Observatory.
We determine membership class and membership probability for over 446 000 objects, and show
that these are efficient methods for separating field stars from members of the cluster.
In particular, membership probabilities of variable stars and blue/yellow/red stragglers
are determined. Finally, we find absolute proper motions for six globular clusters from our sample:
M55, NGC 3201, M10, NGC 362, M5, and 47 Tuc. An electronic catalogue of the derived proper motions
is publicly available via the internet.