From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - January 2, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – January 8, 1899
From Mme Guerin to Sr Francoise-Therese (Leonie) - January 31, 1899
From sr Francoise-Therese (Leonie) to her three sisters – February 2, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – February 12, 1899
From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - February 14, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – April 2, 1899
From sr Francoise-Therese (Leonie) to Mother Marie de Gonzague – April 23, 1899
From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - April 4, 1899
From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - April 23, 1899
From Sr. Marie of the Sacred Heart to Sr. Genevieve (Celine) - April 28, 1899
From sr Francoise-Therese (Leonie) to her three sisters in the Carmel - May 7, 1899
From sr Francoise-Therese (Leonie) to her three sisters in the Carmel - May 21, 1899
From Mother Agnes of Jesus to sr Francoise-Therese (Leonie) - May 21, 1899
From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - May 25, 1899
From sr Marie of the Eucharist (Marie Guerin) to her mother Mrs Guerin - May 29, 1899
From sr Marie of the Eucharist (Marie Guerin) to her father Isidore Guerin - June 4, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – June 9, 1899
From sr Francoise-Therese (Leonie) to her three sisters in the Carmel - June 17, 1899
News of sr Francoise-Therese (Leonie) to her three sisters – June 17, 1899
From sr Francoise-Therese (Leonie) to her three sisters in the Carmel - June 22, 1899
From sr Genevieve (Celine) to sr Francoise-Therese (Leonie) - June 26, 1899
From sr Marie of the Eucharist (Marie Guerin) to Sr Francoise-Therese (Leonie) - June 28, 1899
From Sr Marie of the Sacred Heart to Sr Francoise-Therese (Leonie) - June 28, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – July 23, 1899
From sr Francoise-Therese (Leonie) to sr Genevieve (Celine) - August 3, 1899
From sr Francoise-Therese (Leonie) to Mme Guerin – August 6, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – August 15, 1899
From sr Francoise-Therese (Leonie) to sr Marie of the Sacred Heart – August 28, 1899
From sr Genevieve (Celine) to sr Francoise-Therese (Leonie) - October 1, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – October 4, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – Mid-October 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – November 3, 1899
From sr Francoise-Therese (Leonie) to her three sisters in the Carmel - November 12, 1899
From Sr. Marie of the Sacred Heart to Mme Guerin – November 18, 1899
From sr Genevieve (Celine) to Mrs Guerin – November 18, 1899
From sr Marie of the Eucharist (Marie Guerin) to her mother Mrs Guerin - November 19, 1899
From Mme Guerin to Mother Marie de Gonzague – November 19, 1899
From sr Marie of the Eucharist (Marie Guerin) to Mrs Pottier – November 30, 1899
From sr Marie of the Eucharist (Marie Guerin) to her parents (Isidore and Mrs Guerin) - December 31, 1899
From sr Marie of the Eucharist (Marie Guerin) to Jeanne (Guerin) La Neele - 1898-1899?
From sr Marie of the Sacred Heart to sr Francoise Therese (Leonie) - 1899 undated