Centesimus annus
   Chap., §
 1 Int,  1(1)   |      May 15, 1891): Leonis XIII P.M. Acta, XI, Romae 1892, 97-
 2   1,  4(7)   |  February 10,1880): Leonis XIII P.M. Acta, II, Romae 1882, 10-
 3   1,  4(7)   |     June 29, 1881): Leonis XIII P.M. Acta, II, Romae 1882, 269-
 4   1,  4(7)   |     June 20, 1888): Leonis XIII P.M. Acta, VIII, Romae 1889,
 5   1,  4(7)   |  January 18, 1901): Leonis XIII P.M. Acta, XXI, Romae 1902, 320.~
 6   2,  17(47) | February 10, 1880): Leonis XIII P.M. Acta, II, Romae 1882, 10-
 7   2,  17(47) |         29, 1881 ): Leonis XIII P.M. Acta, II, Romae 1882, 269287;
 8   2,  17(47) |  November 1, 1885): Leonis XIII P.M. Acta, V, Romae 1886, 118-
 9   2,  17(47) |  January 10, 1890): Leonis XIII P.M. Acta, X, Romae 1891,10-41;
10   2,  17(47) |  December 28,1878): Leonis XIII P.M. Acta, I, Romae 1881, 170-
11   2,  17(47) |     June 20, 1888): Leonis XIII P.M. Acta, VIII, Romae 1889,


Ecclesia de Eucharistia
   Chap., §
12 Int,  9(5)   |                     Leonis XIII P.M. Acta, XXII (1903), 115-136.~


Redemptoris Mater
   Chap., §
13   1,  10(24) |        8 December 1854): Pii IX P.M. Acta, pars I, 616; Second


Veritatis splendor
   Chap., §
14   2,  34(58) |       December 8, 1864): Pii IX P.M. Acta, I, 3, 687-700; Leo
15   2,  34(58) |      June 20,1888): Leonis XIII P.M. Acta, VIII, Romae 1889,
16   2,  44(83) |      June 20,1888): Leonis XIII P.M. Acta, VIII, Romae 1889,
17   3,  99(155)|       June 20,1888), LeonisXIII P.M. Acts, VIII, Romae 1889,