Torah Toil

A man once wanted to buy a bar mitzvah present for a relative. He went to Zundel Berman together with his son and thought that a newly re-typeset Ketzos HaChoshen would be a wonderful gift, something a budding talmid chacham could use for years. He pointed to a particular set, but his son objected: “It’s not the Jimmy! All the boys in yeshiva only use the Jimmy!”
A “jimmy,” of course, is a crowbar, and the father was certain that could not be what his son meant. The boy explained that there was a new edition of the Ketzos HaChoshen that included extensive footnotes and a comprehensive compendium of commentaries, compiled by a noted talmid chacham, HaRav Yechiel Michel Ber Jimitrovsky. Hence the nickname “Jimmy.” The boy added that one rebbe had complained that referring to the edition by that nickname was disrespectful, and as a result, some boys stopped using the name.
There is another sefer that some refer to as “the Green Monster,” or simply “the green book.” When it was first published, it was a groundbreaking work. It was called Otzar Meforshei HaTalmud, an encyclopedia of the various commentaries on a chapter or two of Gemara, bound in a uniquely green cover. No longer did one need to search through mountains of sefarim to see which Acharonim discussed a given passage. Instead, one could consult this work for a concise summary of the relevant commentaries and then proceed to study the originals. At the time of its publication, it was the only sefer of its kind. Since then, the genre has exploded. While the Otzar has competition today, it may still be the most comprehensive resource on any given passage.