1975 Pittsburgh Pirates New Individual Photos

[Sleepless72]

I'm trying to create a checklist for this team issue (which I will upload to the Trading Card Database so others may benefit), but there's virtually no information out there to be had. I've collected the Pirates for a long time, but I only learned of this set within the last 18 months and only saw what I believe are examples from it about two weeks ago, when TWO eBay sellers happened to list them. I made deals for both lots. One of the lots included a series two cardboard header card, so I think most of what I've listed below may come from that series.

The pictures are just that: black-and-white photos on thin paper stock, similar to the Action Photos set from 1971, except they're all portraits.

Also, the date is a guess. Everyone is pictured in the period "mustard caps" and the set includes Ken Brett, so that narrows it down to 1974 or 1975. I know the 1973 team photos are (notoriously) hatless, but I think 1974 may also have been hatless or a mix.

Does anyone have these in their collection? Can anyone help complete this checklist? Does anyone have doubles to trade? (I have a few.) Any help is greatly appreciated!

Here's my work-in-progress checklist:

NNO Ken Brett
NNO Dock Ellis
NNO Dave Giusti
NNO Richie Hebner
NNO Al Oliver
NNO Dave Parker
NNO Bob Robertson
NNO Manny Sanguillen
NNO Willie Stargell
NNO Rennie Stennett
NNO Frank Taveras
NNO Richie Zisk
NNO Series One Header
NNO Series Two Header