What I can confirm from sources that are *actually accessible online* is:
## Where Józef Pronicki shows up in published research
* A modern scholarly edition of early postwar railway-worker testimonies (Justyna Majewska, *Zagłada Żydów. Studia i Materiały*, 2017) lists **Józef Pronicki as “zawiadowca stacji” (stationmaster) at Treblinka station** among the Polish railway staff working there during the occupation. ([Zagłada Żydów][1])
* The Treblinka Museum’s exhibition catalog **“Stacja Treblinka. Między życiem i śmiercią”** (2021) also explicitly identifies **Józef Pronicki as stationmaster**, notes underground/conspiracy activity, and says he **left Treblinka for Warsaw** (the snippet I can access doesn’t show the full sentence with the exact month/day). ([Muzeum Treblinka][2])
So yes—Pronicki is recognized in contemporary Polish research/museum work as a real figure connected to Treblinka station.
## Do we have a *published* interrogation / written account by Pronicki himself?
### In the key published set of *immediate postwar interrogations*: **I did not find Pronicki’s own protocol**
Majewska’s article is specifically an edition of **22 immediate postwar interrogation protocols** (1945–46) of Polish railway workers from stations near Bełżec, Sobibór, and Treblinka. It prints **7 testimonies connected to Treblinka**, including (among others) **Józef Kuźmiński, Józef Pogorzelski, Lucjan Puchała, and Franciszek Ząbecki**—but **not** Józef Pronicki. ([Zagłada Żydów][1])
Importantly, Majewska also states that the **Treblinka railway-worker testimonies she publishes come from the IPN archive**, attached to the files of the **Ludwig Fischer trial (AIPN, GK 196/69)**. ([Zagłada Żydów][1])
That gives you a very concrete archival “address,” but Pronicki’s own interrogation is **not** among the protocols that were edited and printed in that publication.
### A timeline note that may relate to your “Feb or May 1943” question
One of those published postwar interrogations—**Józef Kuźmiński’s testimony of 16 October 1945**—states he was transferred to Treblinka station **“at the beginning of January 1943”** to perform stationmaster duties. ([Zagłada Żydów][1])
If Kuźmiński is correct, that implies Pronicki had left (or was being replaced) by **early January 1943**, which may conflict with secondary claims that Pronicki remained until February or May 1943. (That discrepancy could be: an overlap in duties, an “acting” stationmaster period, or simply memory/record differences.)
## Other “accounts” involving Pronicki (but not authored by him)
There is a widely repeated story in popular narrative literature (e.g., Michał Wójcik’s *Treblinka 43* excerpt) about a railwayman named **Pronicki** entering the camp area to deliver a letter and then describing what he saw. In that excerpt, the first name appears as **Artur Pronicki** (not Józef), and it cites Franciszek Ząbecki’s memoirs as the underlying source.
I’m flagging this because:
* it may be **the same person misnamed**, or a **different Pronicki**, or a narrative retelling that introduced an error; and
* it is *still not* a surviving interrogation protocol or memoir written *by* Pronicki—rather, a story *about* Pronicki mediated through other authors.
## Most likely place to look for Pronicki’s interrogation if it exists
Based on what the scholarly edition tells us, the best lead is:
* **IPN archival holdings** connected to **AIPN, GK 196/69 (Proces Ludwiga Fischera)**, because Majewska indicates that is where the Treblinka railway-worker interrogation materials she published were attached. ([Zagłada Żydów][1])
If Pronicki was interrogated in 1945–46, it may be:
* in **GK 196/69** but simply **not selected** for publication by Majewska, or
* in a **related Treblinka investigation file** of the Main Commission / IPN that wasn’t the source base for that article.
### Practical request language that tends to work with archives
When querying IPN / requesting scans, wording it like this is often helpful:
* “**Protokół przesłuchania świadka**: Józef Pronicki, *zawiadowca stacji Treblinka*”
* “**relacja / zeznanie / ankieta personalna** Józefa Pronickiego dot. stacji Treblinka / transportów do obozu”
* include the pointer: “materiały powiązane z **AIPN GK 196/69 (Proces Fischera)**”
## Bottom line
* **Yes**, Pronicki is named in modern scholarship/museum research as stationmaster at Treblinka station. ([Zagłada Żydów][1])
* **No**, I did **not** find any **published** or clearly **digitized online** interrogation protocol or first-person written account *by* Józef Pronicki in the main printed set of immediate postwar railway-worker interrogations; that edition prints other Treblinka-station witnesses instead. ([Zagłada Żydów][1])
* The **strongest concrete lead** for locating a Pronicki protocol (if it survives) is to pursue IPN holdings tied to **AIPN GK 196/69** and related Main Commission case materials. ([Zagłada Żydów][1])
If you tell me what archive system you’re using (IPN request, ŻIH, Bundesarchiv, etc.) and what language you’re working in (Polish/German/English), I can draft a focused archival query and a checklist of name/term variants (e.g., spelling variants, role titles like *zawiadowca stacji*, *kierownik stacji*, etc.)—but I didn’t want to guess and send you in the wrong direction.
[1]:
https://zagladazydow.pl/index.php/zz/ar ... hatgpt.com "Zagłada Żydów. Studia i Materiały „Świadek zeznał, co ..."
[2]:
https://muzeumtreblinka.eu/wp-content/u ... hatgpt.com "Stacja treblinka Między życieM i śMiercią"