| Topic | Publication | Reference Pages |
|---|
| Petri | Footsteps Vol. III (1986) | 132 |
| Petri, Adolphe (1879-1879) | The First Founders: Vol. II | 136 |
| Petri, Adolphe (1880-1880) | The First Founders: Vol. II | 136 |
| Petri, Adolphe (1889-dec.) | The First Founders: Vol. II | 136 |
| Petri, Albert (1892-1947) | The First Founders: Vol. II | 136 |
| Petri, Alfred Robert (1899-1980) | The First Founders: Vol. II | 136 |
| Petri, Anita Barbara (b. 1925) | The First Founders: Vol. II | 136 |
| Petri, Anna | Footsteps Vol. II (1985) | 80 |
| Petri, Anna Sophia | Footsteps Vol. VII (1990) | 35 |
| Petri, Anna Sophia (1848-1866) | The First Founders: Vol. II | 136 |
| Petri, Catherine | Footsteps Vol. I (1984) | 20 |
| Petri, Catherine | Footsteps Vol. II (1985) | 86 |
| Petri, Catherine | Footsteps Vol. IV (1987) | 18 |
| Petri, Cecilia Elizabeth (b. 1919) | The First Founders: Vol. II | 136 |
| Petri, Charles Albert (b. 1930) | The First Founders: Vol. II | 136 |
| Petri, Clara (1890-1970) | The First Founders: Vol. II | 136 |
| Petri, Clarence Henry (1919-1929) | The First Founders: Vol. II | 136 |
| Petri, Clemens John (1919-1975) | The First Founders: Vol. II | 136 |
| Petri, Dorette | Footsteps Vol. V (1988) | 144 |
| Petri, Dorothy | Footsteps Vol. II (1985) | 80 |
| Petri, Edmund (1894-1900) | The First Founders: Vol. II | 136 |
| Petri, Edward (1881-1910) | The First Founders: Vol. II | 136 |
| Petri, Elizabet | Footsteps Vol. XXVI (2009) | 52 |
| Petri, Elizabeth | Footsteps Vol. II (1985) | 80 |
| Petri, Elizabeth (1928-1928) | The First Founders: Vol. II | 136 |
| Petri, Ernest August (1906-1988) | The First Founders: Vol. II | 136 |
| Petri, Ernestine | Footsteps Vol. XXV (2008) | 213 |
| Petri, Estella Marie (1921-1983) | The First Founders: Vol. II | 136 |
| Petri, Frederich Richard | Footsteps Vol. XXVI (2009) | 52 |
| Petri, Friedrich Richard | Footsteps Vol. XXI (2004) | 107 |
| Petri, Heinr | Footsteps Vol. XII (1995) | 19 |
| Petri, Heinrich | Footsteps Vol. II (1985) | 80 |
| Petri, Heinrich | Footsteps Vol. IX (1992) | 4 |
| Petri, Heinrich | Comal County 1880 Census | |
| Petri, Henry | Comal County 1910 Census | 193 |
| Petri, Henry | Comal County 1920 Census | 124 |
| Petri, Hermina | Comal County 1920 Census | 124 |
| Petri, Hermine | Comal County 1910 Census | 193 |
| Petri, Hermine | Comal County 1880 Census | |
| Petri, J H | Footsteps Vol. XI (1994) | 74 |
| Petri, J H | Footsteps Vol. XIII (1996) | 33 |
| Petri, Jacob Heinrich | Footsteps Vol. IV (1987) | 18 |
| Petri, Jahann | Footsteps Vol. VIII (1991) | 13 |
| Petri, Joh | Footsteps Vol. VI (1989) | 120 |
| Petri, Joh | Footsteps Vol. VIII (1991) | 6 |
| Petri, Joh Heinr | Footsteps Vol. XIV (1997) | 172 |
| Petri, Johann | Footsteps Vol. I (1984) | 34 |
| Petri, Johann | Footsteps Vol. VIII (1991) | 60 |
| Petri, Johann | The First Founders: Vol. I | 59, 110, 127, 129, 131, 143, 216; family and biography 476 |
| Petri, Johann | Comal County 1880 Census | |
| Petri, Johann (1810-dec.) | The First Founders: Vol. II | 136 |
| Petri, Johann Heinrich | Footsteps Vol. III (1986) | 111 |
| Petri, Johann Heinrich | Footsteps Vol. VII (1990) | 33 |
| Petri, Johann Heinrich | Footsteps Vol. VIII (1991) | 65 |
| Petri, Johannes | Footsteps Vol. VII (1990) | 35 |
| Petri, Johannes | Footsteps Vol. VIII (1991) | 60 |
| Petri, Johannes Heinrich | Footsteps Vol. II (1985) | 80 |
| Petri, John | Footsteps Vol. II (1985) | 80 |
| Petri, John "Johnny" Emil (b. 1930) | The First Founders: Vol. II | 136 |
| Petri, John (1851-1921) | The First Founders: Vol. II | 136 |
| Petri, John August (1877-1910) | The First Founders: Vol. II | 136 |
| Petri, Lawrence Sidney (1921-1992) | The First Founders: Vol. II | 136 |
| Petri, Louis | Footsteps Vol. XI (1994) | 88 |
| Petri, Lydia Agatha (b. 1925) | The First Founders: Vol. II | 136 |
| Petri, Margaret Mina (1932-1986) | The First Founders: Vol. II | 136 |
| Petri, Mary | Comal County 1880 Census | |
| Petri, Max Charles (1909-1985) | The First Founders: Vol. II | 136 |
| Petri, Mr | Footsteps Vol. VII (1990) | 30 |
| Petri, Mr | Footsteps Vol. X (1993) | 6 |
| Petri, Olga Anna (1896-1971) | The First Founders: Vol. II | 136 |
| Petri, Otto (1886-1939) | The First Founders: Vol. II | 136 |
| Petri, Richard | Footsteps Vol. XXVI (2009) | 52 |
| Petri, Robert (b. 1916) | The First Founders: Vol. II | 136 |
| Petri, Rosa (1884-1957) | The First Founders: Vol. II | 136 |
| Petri, Wilhelm | Footsteps Vol. II (1985) | 80 |
| Petri, Wilhelm | Footsteps Vol. VII (1990) | 33 |
| Petri, Wilhelm | Comal County 1880 Census | |
| Petri, William "Bill" (1907-1952) | The First Founders: Vol. II | 136 |
| Petri, Wm | Footsteps Vol. XI (1994) | 73 |
