On the attribution to Thomas à Kempis see A. Ampe, L'Imitation de Jésus-Christ et son auteur (Roma, 1973) and R.R. Post, The Modern Devotion (Leiden, 1968) pp.520-536 (CIBN).
Title from half-title page, leaf a1r.
Imprint from colophon, leaf l9r: Tractatul[us] venerabilis m[a]g[ist]ri Ioh[ann]is Gerson de meditat[i]o[n]e cordis. Arge[n]tine imp[re]ssus p[er] Martinu[m] flach anno domini .M.cccc.lxxxvij. finit feliciter.
Printed in Flach's types 1:175G and 5:80G.
Signatures: a⁴; b-k⁸ l¹⁰: 86 leaves, leaf l10 blank.
Paper format: Chancery quarto.
PML copy leaf dimensions: 20 x 14 cm.
PML copy missing leaves: c1-2.7-8 replaced in contemporary manuscript.
Hand decoration: Contemporary rubrication, red initials, paragraph marks, capital strokes, and underlining. Annotations: No marginal notations in text.