Warning: XMLReader::XML(): Empty string supplied as input in RepositoryQuery::parseSparqlResults() (line 40 of /var/www/drupal7/sites/all/libraries/tuque/RepositoryQuery.php).
Warning: XMLReader::read(): Load Data before trying to read in RepositoryQuery::parseSparqlResults() (line 45 of /var/www/drupal7/sites/all/libraries/tuque/RepositoryQuery.php).
Warning: XMLReader::XML(): Empty string supplied as input in RepositoryQuery::parseSparqlResults() (line 40 of /var/www/drupal7/sites/all/libraries/tuque/RepositoryQuery.php).
Warning: XMLReader::read(): Load Data before trying to read in RepositoryQuery::parseSparqlResults() (line 45 of /var/www/drupal7/sites/all/libraries/tuque/RepositoryQuery.php).
Based in Philadelphia, the American Sunday-School Union was the most prolific publisher of children's books in 19th-century America. The Union illustrated its books and periodicals copiously, mainly with wood engravings. The original woodblocks were used through multiple printings and retained by the Union.
