TY - GEN TY - GEN T1 - Summa, qvae vocatur Catholicon.. A1 - Balbus, Johannes A2 - Gutenberg, Johannes, ca. 1397-1468, kirjanpainaja LA - lat PP - Mainz PB - [Printer of the 'Catholicon'] YR - 1460 UL - https://kansalliskirjasto.finna.fi/Record/fikka.79741 NO - Collation: [a¹⁰–f¹⁰ g⁴ h¹⁰–t¹⁰ v⁵ x¹⁰–z¹⁰ A¹⁰–P¹⁰ Q⁴]. NO - ISTC: Also recorded as [Johann Gutenberg?], 1460 and [between 1460 and about 1472]. Three issues can be distinguished in spite of identical typesetting: a) printed on vellum or Bull's Head paper; b) on Galliziani paper; c) on Tower & Crown paper. This has given rise to the theory that issue a) was printed in 1460, issue b) in 1469 and issue c) about 1472; see P. Needham, in BSA 76 (1982) pp.395-456 and the articles "zur Catholicon-Forschung" in Wolfenbütteler Notizen zur Buchgeschichte 13 (1988) pp.105-232. For an alternative theory that all three states were printed about 1469, see L. Hellinga in Gb Jb 1989 pp. 47-96 and in the Book Collector (Spring 1992) pp. 28-54. ER -