David Frederick Launy

• To the inhabitants of the city of Philadelphia, and particularly to those suffering under the most acute chronic and other diseases, the following evidences are respectfully submitted
• A short account of the salutary effect of Doctor Launey's medico condensed air
• Dr. Launy's appeal to sound unprejudiced reason
• Sir, Conscious of your tastes for arts and sciences which your genius improves by spreading light over them, I am no less an admirer of your patriotism; I thought it my duty to present you with the view of a work ..
• [Certificates and affidavits of cures effected by the use of medico condensed air