It came in a flat box, as vinyl albums did for decades. One day, YEARS ago, I got 29 albums in the mail on the same day. But the one that landed Saturday was the first new album I’d seen in years. 

The return address was Terry Adams’s P.O. box. 

Inside was: “Blue Ice of Winsted,” the last songs former NRBQ guitarist Steve Ferguson recorded before he died of lung cancer in 2009. He played this music on dulcimer, a late-in-life enthusiasm when his waning strength put the guitar out of reach. His former band-mate Terry Adams, NRBQ pianist and now clearly its leader, assembled it with care and devotion.

In 2006, Adams had brought his friend and erstwhile bandmate into the studio for “Louisville Sluggers,” a time-travel through NRBQ personnel and power that they also took on the road. 

That tour hit WAMC’s The Linda, the first venue Adams would visit with his Rock and Roll Quartet in May 2009. (He recorded and toured under that name until he felt satisfied the new band deserved the NRBQ name.) On a warm November night in 2007, Adams and Ferguson, bassist Pete Toigo and NRBQ drummer Tom Ardolino played a sold-out show spanning 20-plus songs including early ‘Q classics Ferguson played on, later NRBQ faves and such left-field numbers as “Suki Yaki” (Ardolino sang that one up front, Adams at the drum kit), also the “Dragnet” TV theme and “Flat Foot Flewzy.” 

For guitarist Al Anderson, who replaced Ferguson in NRBQ (mid-70s to mid-90s plus reunions) that song was crucial. “I heard him play the intro to ‘Flat Foot Flewzy,’ which was life-changing for me because all the other guitar players at the time were trying to distort and be like Hendrix,” Anderson told Mass.live.com before a 2009 Ferguson tribute show. “But Steve was the real deal, the only guy playing like that — real.” 

When frequent NRBQ guest saxophonist Jim Hoke complimented Anderson’s playing on a vintage NRBQ song that featured Ferguson on the original, Anderson modestly said, “Fergie could play stuff I can’t touch.” 

The sense of reality that Anderson cites, of somebody playing music they really mean, shines through “Blue Ice of Winsted.” As Rick Mattingly wrote in the album notes, “‘Blue Ice of Winsted’ combines Steve’s spiritual journey with his travels in the physical world.”

“This music was his last; he knew that,” said Terry Adams by email.

The opening and title track “Blue Ice of Winsted” describes a landscape in simple, sincere instrumental terms; portraying roadside ice formations Ferguson spotted on the way home with a new dulcimer he bought in Winstead, Connecticut after working with Adams on “Louisville Sluggers.”

“Waitin’ On the Avalon” traces a raffish riverboat journey complete with gamblers, fugitives and other ne’er-do-wells. Apart from a count-off later, It’s the only vocal number, a crackly, plaintive sound, and it testifies to Ferguson’s admiration for colorful miscreants.

In “Journey of the Magi,” his playing achieves a stately grandeur akin to viola da gamba master Jordi Savall’s early-music explorations.

Ferguson next manages a zippier evocation of Savall’s questing internationalism in “Melungeon Son Dance,” a celebration of the multi-culturalism he’s honored throughout his career, from the soul-rock-jazz amalgam of NRBQ through his own Midwest Creole Ensemble. (Check that band’s sparkling, funky album “Mama U-Seapa” Schoolkids’ Records 1995).

Flip the record over and up comes “Angelic Waltz,” the first song Ferguson crafted on dulcimer and a short, graceful mood piece here.

“Gathering of the Eagles” acknowledges a tribute to a tribute: a fundraising tribute at the Eagles Club in Louisville for Ferguson’s medical expenses. We hear his voice, for the last time, count off this quiet tune.

“WanDer of the Orient” is another tribute; Ferguson wrote it to honor his guide on wide wanderings in Japan when he and Adams toured there after “Louisville Sluggers” hit. It sounds like friendship more than anything specifically Japanese.

And the album ends with “Ode to McGuinn,” a contemporary of Ferguson and Adams. The Byrds were one of Ferguson’s favorite bands; but rather than echo how the Byrds echoed John Coltrane, Ferguson goes back to the source for a timeless feel.

As Adams said by email, “I just oversaw the project after the fact, seeing that it was mixed and mastered well, and looked good.” He said, “It was Steve’s gift to the world and I wanted to make sure it was received.”

“NRBQ was a rehearsal band, playing for ourselves only, at home,” Adams explained, noting how Ferguson transformed it. “When Steve came over and joined in, it didn’t take long to realize we would be living rich lives by bringing our approach to people,” said Adams, defining his own life’s work. “Even though Steve left the band in 1974, we remained musical brothers,” said Adams, explaining, “We did an album together called ‘Louisville Sluggers’” (Clang! Records 2007).

“When I became the producer for (Chuck Berry pianist) Johnny Johnson’s album (“Johnny B. Bad” Elektra Nonesuch 1991), he was the first person I called,” said Adams. Johnson’s album also featured Eric Clapton, Keith Richards, Bernie Worrell and members of NRBQ.

“His music still lives in our recordings and concerts,” said Adams of his late friend – a gifted music-maker with a distinctive, cleanly articulated approach, a now-vanished star who made music to cherish.

Steve Ferguson’s album “Blue Ice of Winsted” is available at http://nrbq.com/store_lps.html.