Retrace Thoreau’s steps, without leaving Cambridge starting Saturday at the Harvard Museum of Natural History, 26 Oxford St.

Photographer Scot Miller traversed the state of Maine for seven years retracing the the footsteps of New England’s native son, Henry David Thoreau in writing the now 150-years-old “The Maine Woods.” What he found – stunning photographs of many places Thoreau explored and wrote about, along with historical information and natural history specimens from Harvard’s collections – opens to the public with the chance to meet and talk with Miller (an occasional contributor to CBS Sunday Morning with Charles Osgood’s “Moment of Nature”) from 9 a.m. to noon Saturday. The exhibition, “Thoreau’s Maine Woods: A Journey in Photographs with Scot Miller” compliments the ongoing exhibition, “New England Forests” in the Zofnass Family Gallery and runs through Sept. 1.

Go to a concert with your kids that you’ll all enjoy at 11:30 a.m. Saturday at The Sinclair, 52 Church St., Harvard Square.

If you miss the social life you had before kids, including listening to great live music and enjoying a beer, with Rock-n-Romp you can have it all (hookups in bathroom stalls not included). The family-friendly concert series began in Washington, D.C., and there’s always local talent performing – in this case, the Beatles-influenced Spirit Kid and The Luxury, a Britpop band by way of Central Massachusetts that won not only the WBCN Rock N’ Roll Rumble, but a 400-band contest to open for Coldplay at the TD Garden. The volume is lower than you might remember, organizers say, but the music is designed for parents and kids and the environment is safe and friendly.

Buy cupcakes and warm-weather clothing, see art and hear a tuba quartet starting at 1 p.m. Saturday at The Nave Gallery, 155 Powderhouse Blvd., near Teele Square, Somerville.

There’s a lot going on at The Nave. Start with the Wrap Around Sale, at which you can buy handmade knitted, crocheted and sewn goods to benefit the Somerville Homeless Coalition, and the opening Cupcake Reception, with donated cupcakes for sale, both from 1 to 5 p.m. At the same time you can visit the gallery’s “Reliquary” show, where 10 artists play on the concepts of enclosure, concealment, display and the sacred and/or profane (a reliquary being a container that holds or displays something sacred). At 7 p.m. comes the unique New England Tuba Quart – two tubas and two euphoniums, actually – performing music stretching from the Renaissance through to today. The quartet, around since 2009 and made of members of the New England Brass Band, makes an excellent argument for tuba quartet as a new chamber ensemble in the community and region. The suggested donation for this event is $10, or $5 with the purchase of clothing from the Wrap Around Project.

Put on the Ritz with the “Young Frankenstein” musical from 8 to 10:30 p.m. Saturday and noon to 2:30 p.m. Sunday at the Massachusetts Institute of Technology’s Stratton Student Center, 84 Massachusetts Ave.

The MIT Musical Theatre Guild Presents Mel Brooks’ “Young Frankenstein,” created by the team that made “The Producers” such a monster hit on Broadway, this show brings to life not only the monster’s “Puttin’ On The Ritz,” but songs such as “The Transylvania Mania,” “He Vas My Boyfriend.” You’d be mad, scientist or not, to miss it. Tickets are $6 for MIT and Wellesley students; $10 for institute faculty, staff, affiliates and community; and $15 for the general public. Tickets are sold at the door, but nonbinding reservations can be made here.

Take in a free, four-performer folk concert from 1:30 to 3:30 p.m. Sunday at Starbucks Harvard Yard, 1380 Massachusetts Ave.

This show, originally scheduled for Brattle Plaza, features performers Carolyn Hayde, Susan Cattaneo, Ian Fitzgerald and Mark Kilianski performing half-hour sets as part of Forever Young: The 7th Annual Folk Music Month in Harvard Square, a production of The Harvard Square Business Association, Folk New England and legendary music club Passim. (Cattaneo is sticking around town for a 8 p.m. Thursday CD release show at Passim.) See performer biographies here.