The group, The Slaves of the Immaculate Heart of Mary, is recognized by their local bishop in NH, and the Pope in Rome.
From: http://catholicism.org/new-mass-schedule-at-ihm-chapel-in-richmond.html
The Slaves of the Immaculate Heart of Mary All Masses are in the traditional Roman Rite (Extraordinary Form) and are offered with the approbation of the Ordinary of the Diocese of Manchester, N.H. Our Mass schedule is as follows
Sunday Masses: 7:30 AM Low Mass, 9:30 AM High Mass (with Rosary preceding at 9:00).
Daily Mass: 7:30 AM Low Mass.
So your purpose here is to proselytize?