The recently published family history "Mämmälän kylän talot ja suvut" (Farms and families of Mämmälä village) by Veli Häkkinen and myself contains a land-holding history of Mämmälä village of Sippola parish, Kymi county, Viipuri province, Finland, as well as genealogical information, organized in 400 family groups, of villagers who resided at one of the farms of the village, namely, Spännäri, Tykkä, Tökkäri (Tökkeri), Juura, Inkeroinen (Ingerois), Sippu, Töttö, Toikka, Aho, or Hohti, between 1543 and 1900. The preface, table of contents, and index of names of the book can be found by following the links "esipuhe", "sisällysluettelo" and "henkilöhakemisto" at <http://www.kolumbus.fi/velhak/esite.htm>. Bibliographic information about the book can also be found from "KYYTI", the joint on-line information system of the libraries of Kymenlaakso, <http://www.kotka.fi/kirjasto/kyyti/eng.htm> (searching). Seppo Sippu sippu@cs.helsinki.fi