| Description |
English: Pupils writing on a silicate slated wall, from an advertisement for Black Diamond Liquid Slating
|
| Date | |
| Source | The American Stationer (https://archive.org/details/ldpd_12498671_002/page/n109) |
| Author | Anonymous |
Tag Archives: Blackboards
Teaching Punctuation, by J. W. Orr
From The National Second Reader, 1869.