Immaculate Heart of Mary
About IHM
Prayer & Worship
Who are we?

Immaculate Heart of Mary is a Catholic Church of the Roman Rite. Established in 1946, IHM serves the communities of Los Alamos and White Rock in the County of Los Alamos, NM. St. Joseph's mission church serves the people of White Rock.

Cathy LeClaire Memorial Organ Fund

We exceeded our goal for the organ, associated upgrades and installation costs!!! Your contributions helped us reach our final goal and were very much appreciated.

Thanks to many generous doners who brought us to our final goal.

Pictures of the new organ

Click here to see some pictures of the new organ being set up and tested.


The Dedication Concert for the Catherine LeClaire Memorial Organ
was held October 6 with a Performance by Renowned Organist, Maxine Thévenot

The musical concert was hosted by Immaculate Heart of Mary (IHM) Catholic Church of Los Alamos – to dedicate the new organ recently installed at IHM in the memory of Catherine LeClaire. The concert took place on Sunday afternoon, October 6th at 4 p.m. at IHM, and showcased the talents of organist Maxine Thévenot.

Dr. Thévenot is amongst the foremost artists of her generation, hailed across North America and Europe for her skilful, musical playing and inventive programming. Dr. Thévenot has performed in many of the most prestigious venues throughout Europe, Canada and the US including Dijon Cathedral, France; the Magdeburger Dom, Germany; Westminster Abbey, Westminster Cathedral, St. Paul's and Canterbury Cathedrals, UK; la Cathèdrale de Notre Dame, Paris; as well as Washington National Cathedral in D.C.; Saint Thomas Fifth Avenue, New York City; and la Basilique de Notre Dame du Cap, Montréal. She has also performed at the music festivals of Bratislava, Budapest, Prague, and Vienna and played concertos with orchestras in Chicago, Calgary, New York and New Mexico (UNM).

Maxine Thévenot

Recognized for her excellence as a recording artist, Maxine Thévenot has released eleven well-received CDs on Raven CD. Her recent solo release, recorded on the Hellmuth Wolff Organ of Christ Church Cathedral, Victoria, BC, Canada, was praised by Jean-Yves Duperron of Classical Music Sentinel: “The beauty of invention and purity of voice she brings to the Bach, or the nobility she brings to the Sweelinck are only some examples of how this musician can expose the soul within the works she performs.” Currently, serving as Director of Cathedral Music and Organist at the Cathedral of St. John, Albuquerque, Dr. Thévenot is designing a program of music especially appropriate to the dedication of this new organ in the name of Cathy LeClaire.

Admission to the concert was free, although donations to the Catherine LeClaire Memorial Organ Fund were gratefully accepted.

About Catherine LeClaire…

Cathy LeClaire was part of the fabric of our lives in Los Alamos and White Rock for more than 25 years. She was a loving wife and mother, a woman of great faith and a very talented musician and artist. Cathy was a gentle, faithful and giving soul, a generous spirit always seeing the positive in others while consistently underestimating her own contributions. She touched many lives with her kind, compassionate and artistic nature and her creative sense of humor. Cathy had the ability to create just about anything with her hands – everything from stained glass art to rosaries to drawings and paintings, clothes and crafts of every kind. She loved sharing her gifts with the people around her, contributing her time and artistic and musical talents to IHM, teaching in the religious education program, singing with the choir, accompanying with her guitar and contributing occasional solos as well as designing and constructing banners to decorate the church. Cathy sang with the IHM quartet, a group that produced an award winning CD ‘Holy Ground’ with all the proceeds donated to the Church.

Cathy’s valiant struggle against cancer was a grief felt by many. It is fitting that IHM’s new organ will bear her name as a testament to her love of music, dedication to the community and her Catholic faith.

About the Memorial Organ Fund…

The decision was made some time ago to lay the necessary groundwork leading to the purchase of a new organ for the next generation of worshipers and sacred music lovers at IHM. The Catherine LeClaire Memorial Organ Fund was announced on May 17, 2011 at Cathy’s Mass of Christian Burial. IHM serves over 1300 families in Los Alamos and the surrounding communities. A selection has been made of a Rodgers Infinity 361 organ with three manuals and the most advanced stereo sampling of cathedral quality sound available ( The cost of purchasing and installing the organ is approaching $100,000 with a large portion of the money already raised over the past two years through generous contributions from parishioners and many others in Los Alamos and surrounding communities. Money has also been raised through a series of benefit concerts made possible with the generous efforts of many gifted musicians who donated their time and talent.