| Lawrence |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Sep-2007 |
| LAWRENCE ENGINEERING SLIDE RULE AND CASE #2 | $20.00 | 21-Sep-2007 | 1 |
| 4 Vintage Slide Rules PRECISION *LAWRENCE *HEM | $7.99 | 08-Sep-2007 | 1 |
| "VINTAGE LAWRENCE DELUXE SLIDE RULE, PERU, IND | $5.99 | 09-Sep-2007 | 1 |
| "Lawrence DeLuxe Engineering Wood Slide Rule, | $5.00 | 09-Sep-2007 | 1 |
| Lawrence Wood Slide Rule Pat Pend Made In USA | $4.99 | 09-Sep-2007 | 1 |
| "Lawrence Wooden Slide Rule, Made USA -Peru, I | $4.99 | 09-Sep-2007 | 1 |
| Vintage Lawrence Engineering Service Slide Rul | $3.75 | 06-Sep-2007 | 1 |
| 1939 Lawrence Slide Rule with box and instruct | $3.00 | 20-Sep-2007 | 1 |
| Vintage wooden Lawrence Engineering Slide Rule | $2.99 | 18-Sep-2007 | 1 |
| 2 vintage slide rules in cases/Lawrence engine | $2.99 | 19-Sep-2007 | 1 |
| LAWRENCE SERVICE VINTAGE SLIDE RULE WITH CASE | $0.99 | 06-Sep-2007 | 1 |
| Lawrence Eng. Wabash Ind. Wooden Slide Rule | $14.09 | 19-Sep-2007 | 0 |
| Lawrence Eng. Wabash Ind. Wooden Slide Rule | $14.09 | 05-Sep-2007 | 0 |
| 1939 LAWRENCE SLIDE RULE Instruction Book | $9.99 | 23-Sep-2007 | 0 |
| Lawrence Wood Slide Rule & United Aircraft Cal | $9.99 | 15-Sep-2007 | 0 |
| "Vintage Lawrence Engineering, Peru Indiana Sl | $9.99 | 10-Sep-2007 | 0 |
| Old Lawrence Engineering Walbash IN Wood Slide | $9.99 | 22-Sep-2007 | 0 |
| "Vintage pat.pend slide rule,wood,Lawrence 8-B | $4.99 | 08-Sep-2007 | 0 |
| "Vintage pat.pend slide rule,wood,Lawrence 8-B | $4.99 | 16-Sep-2007 | 0 |
| VINTAGE LAWRENCE ENGINEERING WABASH WOOD SLIDE | $3.99 | 05-Sep-2007 | 0 |
| Vintage Lawrence Slide Rule Instruct Engineeri | $3.99 | 15-Sep-2007 | 0 |
| LAWRENCE Deluxe Wood Slide Rule w/original box | $3.99 | 23-Sep-2007 | 0 |
| VINTAGE LAWRENCE ENGINEERING WABASH WOOD SLIDE | $1.99 | 15-Sep-2007 | 0 |
| "Lawrence Engineering Service, Peru, Indiana S | $0.99 | 23-Sep-2007 | 0 |
| LAWRENCE ENGINEERING SERVICE VINTAGE SLIDE RUL | $0.99 | 02-Sep-2007 | 0 |