The bureau shall maintain the text of the statutes, the constitution, the index, and other matter included in the compiled laws and make the text conform to the statutes and constitution as thereafter added, altered, repealed, or amended. The bureau shall preserve such parts of the catchlines, indexes, and tables prepared for the public and local acts as may be useful in maintaining the general statutes contained in the compilation. Any of the materials so maintained, by agreement made with the director upon approval of the council, may be used in the publication of such portions of the constitution and statutes as may be agreed upon for any department or agency of the state or political subdivision of the state.