Included here is the data from the Johns Hopkins article search comparison study of September 2012. As reported in an article still in progress, likely to be published in the Code4Lib Journal (http://journal.code4lib.org) in 2013, with the tentative title "A Comparison of Article Search API's via blinded experiment and developer review," by Jonathan Rochkind. We are making this data available for purposes of complete transparency of our research process and analysis, and in case anyone would like to analyze our results on their own. The data here is a dump of the database collected by the bento_battle tool used as our survey instrument, the exact version of the tool used is as tagged at https://github.com/jrochkind/bento_battle/tree/jhu-study-10Sep2012 and https://github.com/jrochkind/bento_battle/tree/jhu-study-17Sep2012 There are two files included here: 1. complete_database_dump.sql.zip : Complete dump of bento_battle database, using `mysqldump`. Can be used to restore a mysql database with identical contents to ours when we concluded the study. There are three tables included, `selections`, `timing`, and `errors`. 2. selections.csv.zip : The `selections` table (also included in complete dump above), included in comma-seperated value (CSV) format, for potentially easier use of the key table involved in our results. The first row of the CSV is column headers.