Research methodologies and new approaches to interpreting the Madrid Codex / Gabrielle Vail and Anthony Aveni -- The paper patch on page 56 of the Madrid Codex / Harvey M. Bricker -- Papal bulls, extirpators, and the Madrid Codex: the content and probable provenience of the M. 56 patch / John F. Chuchiak -- Tayasal origin of the Madrid Codex: further consideration of the theory / Merideth Paxton -- Maya calendars and dates: interpreting the calendrical structure of Maya almanacs / Gabrielle Vail and Anthony Aveni -- Intervallic structure and cognate almanacs in the Madrid and Dresden Codices / Anthony Aveni -- Haab dates in the Madrid Codex / Gabrielle Vail and Victoria R. Bricker -- A reinterpretation of Tzolk'in almanacs in the Madrid Codex / Gabrielle Vail -- In extenso almanacs in the Madrid Codex / Bryan R. Just -- The inauguration of planting in the Borgia and Madrid Codices / Christine Hernández and Victoria R. Bricker -- 'Yearbearer pages' and their connection to planting almanacs in the Borgia Codex / Christine Hernández -- Screenfold manuscripts of highland Mexico and their possible influence on Codex Madrid: a summary / John M.D. Pohl