Ruby-marc sages, What's the best way to re-sequence fields in a record after appending to it? This seems to work ok, but feels wrong. for record in reader # Return a record with new field appended. newrecord = add_control_number(record) ### Re-sort fields by tag and copy them to a new record. ### sortedrecord = MARC::Record.new sortedrecord.leader = newrecord.leader newrecord.sort_by{|f| f.tag}.each {|tag| sortedrecord.append(tag)} writer.write(sortedrecord) end Thanks, Jason Jason Stirnaman Lead, Library Technology Services University of Kansas Medical Center [log in to unmask] 913-588-7319