Wasner's H64, gifted by a friend, was used during the writing of The Louder I Call, The Faster It Runs and for the recording of Head of Roses, as described in the following interviews. It can be seen in this performance recorded prior March 26, 2021 (at 16:52), this performance recorded prior May 6, 2021 (at 2:33), this performance recorded prior to July 1, 2021, and this performance recorded prior to November 15, 2021 (at 0:16).

Music Radar, "10 questions for Jenn Wasner" by Michael Astley-Brown (August, 17 2016)

2. The building's burning down - what one guitar do you save?

"Probably my '60s-era semi-hollow body Harmony Rocket - because it was a gift from a friend, and because it's old and beautiful and difficult to replace!"

Music Radar, "Wye Oak's Jenn Wasner: 'With a guitar you can make it into anything you want. It’s endlessly variable'" by Matt Parker (April 9, 2018)

“One of my favourite guitars that I have was a gift from a friend, years ago - it’s a Harmony Rocket, a semi-hollow-bodied guitar from the '50s that is just gorgeous. The song You Of All People has sort of a distinctly different vibe to it and that was something I wrote on the Harmony as opposed to one of the Reverends.”

Guitar World, "Flock of Dimes' Jenn Wasner: 'I'm such a fan of altered tunings. That's one of my favorite things about guitar – the malleability of it'" by Matt Parker (April 7, 2021)

What were you using on the guitar side for this record?

“Well, one of the guitars that I use a lot on this record was actually a guitar that I've owned for a really long time. It is this old, beautiful semi-hollow body Harmony Rocket. It's got the Bigsby tremolo and it's absolutely gorgeous, but it was just never the right guitar for the moment.

[...]

And was there anything else that you leaned on a lot in this record?

“For Price Of Blue, it was like a multitude of guitars! I used Nick's dad's '80s Strat for the lead guitar on the guitar solo. And the Harmony was layered in. And also my Reverend model that they made it for me, I used that a bunch on that – I can't say enough good things about Reverend as a company, I love their guitars.

Reddit, r/indieheads, "hi, I'm Jenn Wasner AKA Flock of Dimes, AMA!" by u/heyitswaz (May 19, 2021), reply to u/ChristmasInJuly

ChristmasInJuly Tell us about your gear (guitar/synth/vocals)! Was there anything essential you used for Head of Roses? Any recording tips/secrets that happened at Betty’s? :)

heyitswaz Guitar-wise, I mostly played my harmony rocket semi-hollow body guitar, and of course my signature Reverend JW-1.