Richard Penn to Faraday   23 January 1830¹

Great George Street | 23 Jany 1830

My dear Sir,

If you think that a sight of my cipher² would repay you the trouble of coming here, I should be most happy to shew it & explain it to you whenever you may do me the favour to call on me between 12 & 2 o’clk[.]

Yours very faithfully | Richd Penn

M. Faraday