- Parish grounds are purchased by Archbishop Urban J. Vehr. on February 24, 1947.
- Many Lourdes' parish families consisted of WWII vets.
- First Pastor Reverend Damen L. McCaddon is acquired–also known as "Father Mac"–an avid outdoorsman who organizes regular camping and ski trips for the young parishioners.
- Fr. McCaddon works with the Rocks to plant trees, and transform the spacious parish grounds into a retreat oasis, complete with outdoor stations of the cross.
- The Sisters of St. Francis of Perpetual Devotion initiate Sunday school.
- Construction begins for new , $150,000 Church and school combination building.
- First four classrooms completed. Sisters of St. Francis of Perpetual Adoration convinced 101 students to attend Saturday classes to make up for lost time.
"It Stayed Up!"
- Library, basement (now McCaddon Hall), and offices were completed for Archbishop Behr's dedication ceremony.
- Christmas Day, more than 1,650 people attend Mass in the new subterranean church.
- A group of 200 male volunteers, known as the "Rocks" of Lourdes, build the massive, 52-foot-high stone shrine and outdoor altar (Grotto) from the ground up.
- Funding arises from Rocks-sponsored events, such as picnics, bingo games, Sunday breakfasts, dances, Mardi Gras galas, harvest parties, bazaars, dances, and Mardi Gras galas. Initial gala raises a $5,000 net profit, which purchased the house at 2218 S. Logan as a temporary rectory and meeting place.
- The Archbishop celebrated Solemn High Mass with 50 priests in what is now known as the cafeteria of McCaddon Hall.
- Holy Ghost Catholic Church donates the cross that adorns the top of the Grotto.
- Altar & Rosary Society arises, composed of 80 women.
- Holy Name Society also develops, composed solely of men.
- 8th-grade classroom is added.
- 5th–7th-grade classrooms are added in new school wing.
- First 8th-grade class graduates.
- Stations of the Cross are donated.
- By 1954, just 7 nuns teach 384 students spanning grades kindergarten through 8th!
- Convent (now the seminary house) is built for the sisters, after they were chauffeured each day.
- Present-day rectory purchased for $13,000 (this equates to $107,000 when adjusted for inflation).
- Second shrine and prayer park, complete with St. Francis sculpture, grass, and trees, is completed.
- Church is built over the top of the basement church.
- Church construction is completed on May 6th. Masses are moved out of the basement, and into the new church.
- Archbishop Vehr presides at the highly anticipated church dedication. He blesses a neo-Romanesque, buff brick structure designed by John K. Monroe.
- Fr. McCaddon Retires on November 28, after spending 19 years on the foundation and development of Lourdes. Since Fr. McCaddon, ten more priests have led Our Lady of Lourdes parish: Fr. Robert Kekeisn (1996), Fr. Robert Harrington (1972), Fr. Joseph Lievens (1973), Fr.George Weibel (1985), Fr. John Barone (1992), Fr. David Blue Jacket (1994), Fr. Robert Fisher (1997), Fr. Frank Lomica (2004), Msgr. Peter Quang (2008), and presently, Fr. Brian Larkin (2014).
- Convent (current seminary house) is converted into a home for the elderly, known as Maryhaven.
- School enrollment drops to 92 children.
- Kindergarten and after-school program added.
- Stained glass windows project ensues.
- Surge in new families occurs throughout the '90s, which increases school enrollment to more than 200 students.
- Three additional classrooms are donated by former teacher, Sarah Greason.
- Present-day seminary house becomes Center for Contemplative Learning.
- Ground breaking for new gym, art, and music rooms begins.
- School almost forced to close because of critically low enrollment rates.
- Msgr. Quang is assigned to Lourdes in an attempt to revive Our Lady of Lourdes parish and school. Rosemary Anderson is hired to begin a Classical Curriculum at Lourdes, and enrollment begins to turn around.
- Fr. Brian Larkin is assigned to Lourdes, initially for a 9-year tenure. Lourdes Mass attendance doubles, and Classical enrollment numbers bounce back. Fr. Brian's tenure is extended to 12 years.
- Capital Campaign for Phase 1 of Our Lady of Lourdes church expansion begins.
- Lourdes Classical gains national recognition, and school is now at maximum capacity, with an extensive waiting list.
- Lourdes welcomes new deacon, Deacon Darell Nepil, of Littleton, Colorado.
- Parish staff grows to ten employees.
- Stewardship program begins, and number of registered parishioners surpasses 1,000.
- Lourdes becomes nationally recognized by Our Sunday Visitor as a thriving parish for various events, such as Gatherings at the Grotto, Pint with a Priest, and others.
- Lourdes Classical gains national recognition, with an award for Commitment to Classical Education, by the Center for Natural Law, and Lourdes Classical Principal, Rosemary Anderson is honored with the "Dr. John J. Carrigg Award" by her alma mater, Franciscan University of Steubenville.