| Leiden: Marienpoel |
Augustinian nuns, just outside Leiden, founded 1428 by Boudewijn van Zwieten, as a new convent for the nuns of the convent of the Elfduizend Maagden in Oudewater, who had to flee.
 | LT-Va F22.95, Processionale-hymnale, 1556 |
| | NL-L Kloosterarchieven 881, Professionale |
| | NL-L Kloosterarchieven 887, Agenda Mortuorum |
| | Ceska Republica, prem. abbey Nova Rise 70, diurnale for Haasje van Poelgeest (Kriezels p. 69) |
| | NL-L 65052/11, breviary, ca 1460, perhaps from Marienpoel (see BNM) |
In addition there are:
| | NL-L Kloosterarchieven 882, Liturgical prescriptions |
| | NL-L Kloosterarchieven 884, Costerinneboeck |
| | NL-L Kloosterarchieven 883, Coster boeck (more or less identical to 884) |
| | NL-Lu BPL 2879, Missale fragment (17 fols.; sequences, no notation), 1438, for the castle Loenersloot (see CMD-NL 2, nr. 546a, pl. 542) |
| | NL-Lu BPL 2777, Cantuale, 1562, for the Oegstgeest parish church, with a colophon naming the chaplain |
 | Leven na de dood, pp. 37-41 and [189], cat.nrs. 54, 90, 91 and 92 (referring to the masters theses and several publications of M. Castenmiller and S. van de Velde) |
| | Archival documents of the convent are summed in Inventaris 503 of the Gemeentearchief in Leiden |