code: function getAbout(db, callback) {
  
    // Check for cached item
    let cacheKey = db.id + "-" + 'about';
    let cache = cache_about.get(cacheKey);
    if ( cache !== null ) {
      return callback(null, cache);
    }
  
    // Build select statement
    let select = "SELECT compile_date, gtfs_publish_date, start_date, " +
      "end_date, version, notes FROM rt_about";
  
    // Query the database
    db.get(select, function(err, result) {
  
      // Database Query Error
      if ( err ) {
        return callback(err);
      }
  
      // No About info returned
      if ( result === undefined ) {
        return callback(
          new Error('Could not get About info from Right Track DB')
        );
      }
  
      // Build and return About
      let about = new About(
        result.compile_date,
        result.gtfs_publish_date,
        result.start_date,
        result.end_date,
        result.version,
        result.notes
      );
  
      // Add about to cache
      cache_about.put(cacheKey, about);
  
      return callback(null, about);
  
    });
  
  }
docs: ==== QUERY FUNCTIONS ==== // 
  Get the data stored in the rt_about table from the
  passed database.
  
  @param {RightTrackDB} db The Right Track Database to query
  @param {function} callback Callback function
  @param {Error} callback.error Database Query Error
  @param {About} [callback.about] The database About information