Father Hieronim Kajsiewicz’s letters
- Reflections on the Divine Mercy (no date); CR Archive - No. ACRR 7779
- Father Kajsiewicz's Letter to Mother Józefa Karska, September 1, 1851; CR Archive - No. ACRR 7780
- Father Kajsiewicz's Letter to Mother Józefa Karska, September 17, 1851; CR Archive - No. ACRR 7781
- Father Kajsiewicz's Letter to Mother Józefa Karska, September 27, 1851; CR Archive - No. ACRR 7782
- Father Kajsiewicz's Letter to Mother Józefa Karska, October 7, 1851; CR Archive - No. ACRR 7783
- Father Kajsiewicz's Letter to Mother Józefa Karska, December 30, 1852; CR Archive - No. ACRR 7784
- Father Kajsiewicz's Letter to Mother Józefa Karska, December 7 (no information about the year); CR Archive - No. ACRR 7785
- Father Kajsiewicz's Letter to Mother Józefa Karska, January 9, 1853; CR Archive - No. ACRR 7786
- Father Kajsiewicz's Letter to Mother Józefa Karska, March, 1852; CR Archive - No. ACRR 7787
- Father Kajsiewicz's Letter to Mother Józefa Karska (no date); CR Archive - No. ACRR 7788
- Father Kajsiewicz's Letter to Mother Józefa Karska, January 11 (no information about the year); CR Archive - No. ACRR 7789
- Father Kajsiewicz's Letter to Mother Józefa Karska, January 27, 1853; CR Archive - No. ACRR 7790
- Mother Józefa Karska's Letter to Father H. Kajsiewicz, January 24 (no information about the year); CR Archive - No. ACRR 7791
- Mother Józefa Karska's Letter to Father H. Kajsiewicz, January 26, 1853; CR Archive - No. ACRR 7792
- Father Kajsiewicz's Letter to Mother Józefa Karska, January 23, 1853; CR Archive - No. ACRR 7793
- Notes on Mrs. Józefa Karska by Father Kajsiewicz (1853); CR Archive - No. ACRR 7794
- Father Kajsiewicz's Letter to Mother Józefa Karska, June 29, 1853; CR Archive - No. ACRR 7794.1
- Father Kajsiewicz's Letter to Mother Józefa Karska, August 3, 1853; CR Archive - No. ACRR 7795
- Father Kajsiewicz's Letter to Mother Józefa Karska, August 16, 1853; CR Archive - No. ACRR 7796
- Father Kajsiewicz's Letter to Mother Józefa Karska, August 26, 1853; CR Archive - No. ACRR 7797
- Father Kajsiewicz's Letter to Mother Józefa Karska (no date); CR Archive - No. ACRR 7798
- Father Kajsiewicz's Letter to Mother Józefa Karska, August 18, 1854; CR Archive - No. ACRR 7799
- Father Kajsiewicz's Letter to Mother Józefa Karska, May 18-20, 1854; CR Archive - No. ACRR 7800