A practical work containing the shortest and most simple rules and
labor saving tables ever devised. The most original arithmetical
work published for centuries.
Elegantly bound in cloth and gilt, price....................................$1.50.
DAVID’S DOUBLE-WHEEL PERPETUAL CALENDAR
Giving all dates forever.
Elegant, heavy cardboard, price...............................................$0.50.
DAVID’S CHARM CALENDAR
An elegant little metal pendant for vest chain,
giving all dates for one hundred years.
Including double-wheel card calendar with explanation, price..$1.00.
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