Donald P. Goodman
The contributor Donald P. Goodman appears to be present as the CTAN community member dgoodmaniii.
Macros for typesetting basic arithmetic
Macros for typesetting catechisms
Control pagestyle of pages left blank by \cleardoublepage
Provides commands for producing a colophon
Typeset documents using base twelve numbering (also called “dozenal”)
A complete family of fonts written in METAFONT
Support for typesetting Catholic liturgical texts
LaTeX macros for utilizing the roundrect METAPOST routines
A non-destructive modulus and integer quotient operator for TeX
Pad numbers with arbitrary characters
Facilities for typesetting poetry and poetical structure
METAPOST macros for highly configurable rounded rectangles (optionally with text)
Draw polygons, reentrant stars, and fractions in circles with METAPOST
Date printing, formatting, and manipulation in TeX
Extremely configurable ellipses with formats for various style manuals
Extremely flexible macros for letters, envelopes, and label sheets