La Correspondance d’Henri Poincaré, Vol. 4: Abréviations
| Abrév. | Meaning | Signification |
| ADft | Autograph draft | Brouillon autographe |
| ADftS | Autograph draft signed | Brouillon autographe signé |
| AC | Autograph postcard | Carte postale |
| ACS | Autograph postcard signed | Carte postale signée |
| AL | Autograph letter | Autographe lettre |
| ALS | Autograph letter signed | Autographe lettre signée |
| ALSX | ALS photocopy | ALS photocopie |
| AD | Autograph document | Document autographe |
| ADS | Autograph document signed | Document autographe signé |
| PD | Printed document | Document imprimé |
| PTrL | Printed transcript of a letter | Transcription imprimée d’une lettre |
| TDS | Typed document signed | Document dactylographié signé |
| TL | Typed letter | Lettre dactylographiée |
| TLS | Typed letter signed | Lettre dactylographiée signée |
| TrL | Transcript of a letter | Transcription d’une lettre |
Time-stamp: " 4.05.2019 00:49"