Delhi Information Bureau
Directory of 13th Lok Sabha and Rajya Sabha members- Directory of 15th Lok Sabha & Rajya Sabha members, 2011
- Directory of 16th Lok Sabha & Rajya Sabha members 2015
- Directory of 16th Lok Sabha & Rajya Sabha members 2016
- Directory of Diplomatic Missions in India and Abroad, 1990
- Directory of press & media, 2008
- Directory on real estate & construction industry, 2011