Source: The Official Guide to the 2016 Republican Nominating Process.

Source: Candidate list from the Pennsylvania Elections Department.

Source: Delegate to Republican National Convention from the Pennsylvania Department of State.

Results from

2016 Presidential Primary returns from the Pennsylvania Secretary of State.

AP Statewide

Politico.

Links to sites with information about the 54 uncommitted delegates:

3rd party anonymous website http://padelegates.blogspot.com/2016/04/pennsylvania-unbound-delegates-for-trump.html Pennsylvania Unbound Delegates for Trump.

https://medium.com/@kerpen/how-many-delegates-did-trump-win-in-pennsylvania-a-detailed-look-355d568bd348#.q1zrusf7e How many delegates did Trump win in Pennsylvania? A detailed look - Phil Kerpen.

http://www.politicspa.com/exclusive-trumps-pa-delegates-slate/74749/ Trump’s PA Delegates Slate from POLITCSPA.

http://triblive.com/mobile/10253036-96/district-whoever-wins Trib survey: Here's how most of Pennsylvania's candidates for delegate would vote from Trib Live.

28 April 2016: Congressman Shuster Endorses Donald Trump for President. Congressman Bill Shuster (R-PA), Chairman of the House Transportation and Infrastructure Committee and delegate for the 9th Congressional District has announced his endorsement of Donald Trump for President:

Based on the links above (as well as other sources), here is the breakdown of the 54 formally "unbound" district delegates:

CD

Hackett & Kaufer- CD winner [Trump]; Vogler-Uncommitted Cohen-Uncommitted; Havey-CD winner [Trump]; Tucker-electability; English-electability; Ryan-Trump; Yates-Cruz Jansen, Sacco & Scaringi- Trump Khare, Klein & McClure-Trump Buckwalter-Trump; Costello-CD winner [Trump]; M.E. Wert- Cruz Miller, Puppio & Willert-CD winner [Trump]; Casper & Worthington-Trump; Loughery- CD winner [Trump] Shuster-Trump; Taylor-Trump; Ward-CD winner [Trump] Pickett, Scavello & Sides-Trump McElwee, Morelli & Shecktor-Trump Morrill & Vasilko-Trump; Steigerwalt-Cruz Casper, Cox & Ellis-Trump DeVanney & Meloy-Uncommitted; Linton-electability Kerwin, Reber & Uehlinger-Trump Brubaker-Cruz; Denlinger-Uncommitted; Dumeyer-CD winner [Trump] Bonkoski, Snover & Villano-Trump DePlato, Petrarca & Uram-Trump

Based on the above listing, we are now "soft"-counting these 54 as follows:

Trump 42 [31 "slated" Trump delegates elected & 11 committed to the CD winner (Trump in all cases)]

Cruz 4

"electability" 3 (which we take to be code for 'Kasich' [as do our sources])

Uncommitted 5