The unnamed contributors to the Penny Cyclopædia included many notable figures of the period, including Henry Ellis, John Kitto, Charles Knight, George Henry Lewes, Augustus De Morgan, James Paget, George Richardson Porter, Thomas Southwood Smith, and Ralph Nicholson Wornum.
Penny Marshall | Penny Arcade | Penny Arcade Expo | Penny Rimbaud | Penny Arcade (webcomic) | Cyclopaedia | Penny Smith | Penny Singleton | Dirty Penny | Penny Lane | Penny Ford | Penny | The National Cyclopaedia of American Biography | Penny Woolcock | Penny Fuller | Penny Broadhurst | Penny Arcade (performer) | Penny Ann Early | Cyclopaedia, or an Universal Dictionary of Arts and Sciences | William Penny Brookes | Two Penny Act | The Penny Black Remedy | Penny Power | Penny Post | Penny Petrone | Penny Junor | Penny Dwyer | Penny Downie | Penny Chenery | penny |