This study conducted a precise recension and comparative analysis of 82 texts across 18 letter groups compiled in Jujadaejeon(A), Jujaseojeolyo(B), and Eojeongjuseobaekseon(C) Volume 4. The bibliographic and technical characteristics derived from the research are as follows: In titling System, While A maintains the original prototype sequence of ‘Epistolary Form–Topic–Title–(Annotation)’, B simplifies this into ‘Topic–Title–(Annotation),’ and C drastically reduces it to either ‘Title Only’ or ‘Title–Annotation’. In textual Compilation and Editing, Both B and C omitted ceremonial greetings and peripheral descriptions found in A, selectively compiling core academic and philosophical discourses. Notably, in the section ‘Dabyugjajeong’, a flexible editing method was identified, where a postscript selected from a different letter was appended. In annotation Placement, To enhance readability, A and C adopted the headnote (頭註) system at the top of the main text, whereas B employed the endnote (尾註) system at the close of the text, demonstrating a clear structural divergence. In philological Variants (異文), The textual variations between the editions primarily consisted of the usage of variant characters (同字), orthodox/vulgar/ancient forms (本字․俗字․古字), and synonymous terms. Additionally, specific instances of distinct words (相異語) that induce semantic changes during textual transmission, as well as contextual emendations, were identified.
The findings of this study will serve as foundational baseline data for research in bibliography, Confucianism, and Sino-Korean literature to clarify the Choson-style adaptation and transmission lineage of Neo-Confucian texts.